Tools

Park's Compact Crank Puller is used to remove Shimano Octalink, ISIS Drive and square-taper cranksets. It includes 2 rotating tips (16.3 and 11.3mm) to make the job easy. This is a great tool for your travel and home tool kit.

Park's Hex Wrench Set offers all the popular Allen wrenches (1.5, 2, 2.5, 3, 4, 5 and 6mm) in a convenient fold-up unit. The tool tips are chamfered for a positive grip and the one-piece fiber-reinforced-resin handle is light, comfortable, slip resistant and 40% stronger than steel.

To prevent poor shifting and uneven drivetrain wear, most manufacturers recommend chain replacement at or before 1% stretch. Now you can quickly and accurately determine the wear and stretch of any chain with Park's Chain Checker. Simply insert the Chain Checker’s pins into 2 links, press the swingarm gauge tight, and then check the gauge window for an accurate reading!

Park's Chainring Nut Wrench makes chainring bolt installation and removal easy. It securely holds the slotted nut to prevent spinning when tightening or loosening the bolt. And, it's double-ended to fit most slotted-type nuts, including Campagnolo chainring bolt nuts.

A favorite of shop mechanics for over 30 year's, Park's CCP-22 Crank Puller removes crankarms that feature square tapers, and those that fit on Power Drive and Power Spline bottom bracket interfaces. The long, comfortable, built-in handle and fine thread provide the leverage needed to remove even the tightest crankarms. And, there's a rotating tip to ensure smooth operation and long life.

Park's BBT-18 is a heavy duty, investment cast tool for installing and removing all Shimano, ISIS Drive, and ISIS Overdrive 8-notch bottom bracket cups.

• Updated to be stronger, smoother, and more versatile • Features a new material and redesigned tip for easier entry into just about any tire, including tubeless • The unique design lifts the tire away from the rim and features a spoke hook to use when multiple levers are needed • This set includes 3 tire levers

Cleans bicycle chain quickly, easily, and effectively — without the hassle and mess of removing the chain from the bike. The Cyclone uses a large solvent reservoir, hundreds of rotating bristles, and a two-step cleaning process to get chains really clean, improve shifting performance, and extend the life of the chain and other expensive drivetrain parts. - Works with all multi-speed bikes (5, 6, 7, 8, 9, 10, 11, and 12-speed) as well as some single-speed models and e-bikes - Strong magnet at the bottom of the fluid reservoir holds metallic particles scrubbed from the chain - Special wicking sponge draws solvent from the chain as it exits, minimizing drips and mess - Sturdy handle makes the Cyclone easy to use and control - Holds 2 fluid ounces (59ml) of solvent

Park's Home Mechanic Pedal Wrench is great for your home workshop and event tool box. This top-quality 15mm pedal wrench provides the leverage you need to remove stubborn pedals. It's made to last from heat-treated steel, and the handle has a vinyl grip for comfort.

Park's Gear Clean Brush has a handle on one end with a curved, serrated edge perfect for cleaning between cassette cogs. The other end's tough nylon bristles are ideal for cleaning the derailleurs, chain and other drivetrain parts to keep them clean and prevent premature wear. It also works great on brakes and other components that collect dirt and grime. The GearClean easily fits in a toolbox or pack.

Many chains use a master link that allows the chain to be installed and removed by hand. While master links don't require traditional chain tools, over time, dirt and corrosion can make it difficult to separate them by hand. Park's Master Link Pliers make removing and installing these master links quick and easy. Simply insert the specially sized jaws into the link and squeeze the vinyl-coated handles!

Park's Heavy-Duty Tire Levers handle the toughest tire-and-rim combinations including difficult downhill and freestyle tires. Their specially designed tips engage the tire bead so it can be removed with just two levers. Plus, these beefy, forged-steel levers are a full 8-inches long for superior leverage.

A great way to hold small parts, tools and components during a repair, Park Tool's Benchtop Overhaul Mat features multiple small pockets and one large work area. It's perfect for suspension work or to organize parts for installation. • Made of a rubber-like PVC • Cleans easily and looks great on any bench • Measures: 14.7” x 7” (38cm x 18cm)

Park's Valve Core Tool is great for tightening, removing and installing Schrader and Presta valve cores (the cores are inside the valve), and also Presta valve extenders that have 5mm wrench flats. It's a handy tool to save a tube when all that's wrong is a broken valve, and it also lets you remove valves to easily insert sealant.

A puncture in your tubeless tire doesn't have to be a death sentence for your ride. This handy carry-along tool repairs small punctures and cuts in tubeless bicycle tires without removing the tire from the rim, getting you back on the trail in no time. The TPT-1 easily plugs the hole by inserting one of the 5 included vulcanized rubber plugs into the puncture. This shrinks the puncture down to a manageable size, allowing the tubeless sealant to do its job and reestablish a seal. The unique sliding plug retainer holds the plug in place and prevents it from being pulled back out as the tool is removed. Everything is stored in a compact package that fits easily in a saddlebag or backpack pocket. - Includes 5 vulcanized rubber plugs (refills available — part #2370K) - Dimensions: 89 x 27 x 40 mm (3.5" x 1.1" x 1.6") - Weight: 79 grams (2.8 oz.) with plugs NOTE: Intended for tubeless bicycle tires using sealant only. Not compatible with inner tube systems.

Professional quality T-Handle hex wrench built for speed, efficiency, leverage and a perfect fit. - Carefully selected combination of Chrome Vanadium and S-2 tool steels - Unique anodized aluminum Speed Spinner makes running long bolts in and out quick and effortless - Machined, chamfered tips allow easier insertion into hex fittings - Integrated “Strip-Gripper” twisted hex that makes removal of most bolts with stripped or oversized hexes fast and easy - Sliding T-handle creates increased leverage and multiple access positions

Forged and machined, the ZP-5 is ideal for closely cutting zip ties and many other materials in tight spaces.

Park Tool's Derailleur Clutch Wrench is a small, thin wrench with 5.5mm and 3mm openings designed to fit the rear derailleur clutch tension adjuster on Shimano XT, SLX, Deore, Saint and Zee rear Shadow Plus (+) derailleurs and all previous Shadow Plus models.

"Take the guesswork out of internal routing. The IR-1.3 speeds the installation of internally-routed cable, housing, electronic wiring and hydraulic hose into carbon fiber, titanium, and aluminum frames. The straightforward guide magnet system utilizes five long guide cables with unique fittings, which can be routed through the frame in a number of ways using the included guide magnet. Everything is neatly stored in a convenient compact case. A true time and frustration saver!??Includes five 188 cm (74"") guide cables with attached magnets and unique fittings: • Barbed adapter — Threads into the end of brake & shift cable housing as well as hydraulic brake hose • Rubber adapter — Securely holds electronic shifting wire such as Shimano® Di2, SRAM® RED® eTAP®, FSA® K-Force® WE®, and Campagnolo® EPS • Di2®-specific adapter — Specially-designed connector clips into the end of Shimano® E-tube® Di2® shift wire, and is perfectly sized to fit into frame holes as small as 6 mm • Di2® EW-SD300-specific adapter — Specially-designed connector clips into the end of Shimano® E-tube® Di2® EW-SD300 shift wire • Reverse-polarity magnet — Used in conjunction with any of the other guide cables - feeds into the opposite end and meets the leading cable in the middle, aiding in routing on frames with tricky interior shapes Also included: • Double-threaded barb — Securely attaches new housing or hydraulic hose to existing housing or hose, allowing for easy replacement without redoing the routing • Guide magnet — routes guide cables through the frame from the outside"

The BKD-1.2 Hydraulic Brake Bleed Kit will bleed most models of DOT fluid-based hydraulic disc brakes, including models made by SRAM®, Formula®, Hayes®, and Hope®. Bleeding of hydraulic brakes removes air bubbles and contaminants from the braking system, for long-lasting components and peak performance. The BKD-1.2 is built for the rigors of daily commercial use and includes two syringes, hoses with shutoff clips, multi-size bleed blocks, and a set of our unique mountable syringe holders, as well as multiple hose fittings to fit the multiple standards found on hydraulic bicycle brake systems. Every part is replaceable and available from Park Tool. Housed in a rugged storage case. Includes: - Two 20 mL syringes Two hose assemblies with shutoff clips - Two 10 mm/12 mm universal bleed blocks - Two 11 mm bleed blocks for Hayes® systems -  Two adjustable syringe holders -  M5 x 0.8 adapters— SRAM® (x2) -  M6 x 1.0 adapter— universal (x2) - Bleeding Edge-specific fitting — SRAM® -  Hose compression sleeve — universal -  Set of spare O-rings and hose -  Replacement parts available -  Brake fluid not included NOTE: The BKD-1.2 is for DOT fluid-based hydraulic bicycle brake systems only. DOT fluid and mineral oil should never be mixed in the brake system or in their respective service tools. Cross-contamination of brake fluid may cause seal failure which may result in brake failure. For mineral oil brake systems use the Park Tool BKM-1.2 Hydraulic Brake Bleed Kit — Mineral Oil.

World-famous Park Tool quality wrapped up in a great set of metric combination wrenches. Forged from chrome vanadium steel, chrome plated, meticulously polished, then center dipped in Park Tool blue vinyl for a positive grip.

World-famous Park Tool quality wrapped up in a combination metric wrench. Features both open and 12-point two-way ratcheting box ends. Forged from chrome vanadium steel, chrome plated, meticulously polished, then center dipped in Park Tool blue vinyl for a positive grip. Strong, comfortable, and beautiful!

They always say, the right tool for the right job. Park's P-handled Torx Wrenches are available in T6, T8, T10, T15, T20, T25, T30 and T40 sizes. They feature offset handles made from durable nylon with a comfortable, ergonomic design. The wrenches are made of high-torque industrial steel for excellent durability.

Park's Cone Wrenches are made of durable tool steel and are nice and thin to fit on the small-clearance cones found on hubs and other bearing assemblies. Plus, they work as regular wrenches, too. They feature Park's special Y heads that put more material where it's needed for excellent durability and strength. Most applications require at least 2 cone wrenches. If you have questions please contact us and we can recommend the correct sizes for your needs.

Park Tool offers premium-quality reamers for nearly any bicycle standard. The reamers below are designed to quickly, accurately, and precisely ream headtubes when used with Park's Head Tube Reamer (HTR), ensuring a perfect headset fit and prfoessional-quality bicycle build. Choose the correct reamer for your application using the following information: - 751.2: This reamer is sized to 30.1mm. This allows a 0.1mm interference fit when pressing the 30.2mm headset of the “Euro” one-inch standard. - 754.2: This reamer is sized to 33.9mm. The allows a 0.1mm interference fit when pressing the 34.0mm headset of the 1-1/8" standard. - 788: This reamer is sized to 43.95mm. It reams head tubes to accept “internal” headset cups with 44.05 - 44.10mm O.D. (1-1/8 ZS standard). It is used with Park Tool's 690-XL Facing Cutter and 750 Centering Cone. - 738: This reamer is sized to 52.1mm. It is used to ream head tubes using the 1-1/2" integrated headset standard. It is used with Park Tool's 690-XL Facing Cutter and 750.2 Centering Cone Adapter. - 789: This reamer is sized to 55.95mm. It is used to ream head tubes to accept “internal” headset cups with 56.00–56.10mm O.D. (1-1/2 ZS standard). It is used with Park Tool's 690-XXL Facing Cutter and #750 Centering Cone Adaptor. - 799: This reamer is sized to 47mm. It is used for cutting the lower head tube on frames using an IS47 bearing for a 1-1/4" integrated headset. It cuts a 45-degree bearing set shoulder.

With today’s lightweight components, torque wrench use in the shop is no longer an option — it’s a must for every mechanic. The TW-6.2 is a high-quality, ratcheting, click-type torque wrench that accurately measures and applies the proper amount of torque to a component’s threaded fastener(s). Designed for higher torque settings for repairs and installation in the bottom bracket, cassette lockring and other areas that use a higher torque settings. For lower torque setting, see the TW-5. Comes with its own protective case. - 10–60 Newton meter range (88–530 Inch Pounds) - Adjustable in 0.25 Nm increments - Ratcheting 3/8" drive - Reads and registers for both left hand and right hand threading - Dial-adjust system allows desired torque setting to be preset - Calibrated to be accurate to +/- 4% - Length: 36.2cm (14.25")

Engineered for fit, function, and leverage, these L-shaped shop-quality hex wrenches are a must have for every workshop. - High-torque, industrial steel wrenches - Straight hex shaft on the short side, ball end on the long side - Includes 2, 2.5, 3, 4, 5, 6, 8, and 10mm - Comfortable, ergonomically designed nylon handles fit perfectly in your hand - Durable wall/pegboard mount tool holder allows easy access and organization

Park's Side Cutter Pliers are professional quality, 7-inches long, and made from heat-treated, forged chromoly steel for crisp, easy cuts and durability. They boast soft-touch, dual-density handles for an excellent grip, too.

Designed and built with the specific needs of the bike mechanic in mind. The RP-SET.2 includes five professional quality pliers for internal snap rings and one for external snap rings. Pliers are made from forged, heat treated cro-moly steel with a return spring and vinyl dipped grips. RP-1: .9mm straight internal. Opens from 22mm down to 0 (tips touching) RP-2: 1.3mm bent internal. Opens from 22mm down to 2mm (center to center) RP-3: 1.3mm bent external. Opens from 2mm (center to center) up to 18mm RP-4: 1.7mm bent internal. Opens from 21mm down to 2mm (center to center) RP-5: 1.7mm straight internal; Opens from 25mm down to 0 (tips touching)

A great time-saver! Park Tool's Nipple Driver is neatly designed to self-center and drive conventional nipples quickly and easily during wheel building. The ND-1 is built with a comfortable, dual-density grip and lined with precision bronze bearings to ensure a long, smooth running life. It works with rims up to 50mm deep.

- The HBP-1 is designed to quickly and accurately press bearings into a wide variety of cartridge bearing-type bicycle hubs. - Quick release design for fast tool installation and removal - Includes two bearing presses and precision machined aluminum pilots, bushings, and spacers - Works with more than 20 different cartridge bearing sizes and multiple axle configurations

Park Tool's Fork Threading Set is designed for cutting new threads and for chasing existing threads on fork columns that are not chromed. The FTS-1's expandable cutting dies are made from the highest quality high-speed steel for precision cutting and long life. The unique thread guide system used with the FTS-1 is specially designed to allow the metal chips and shavings that result during use to fall completely through the guide, preventing damage to the fork threads and the tool. The FTS-1 includes: • Die handles • 1" x 24 tpi cutting die (Part #606) • 1" cutting guide (Part #610) Accessory dies and guides are also available separately: • 1-1/8" x 26 die (Part #607) • 1-1/8" guide (Part #611) • 1-1/4" x 26 die (Part #608) • 1-1/4" guide (Part #612) Die handles fit all three sizes of dies and guides.

Park's Offset Brake Wrench utilizes a unique design that allows it to reach into tight areas that other wrenches cannot. The OBW-3 features a 14mm wrench on one end and the other end fits into a brake's tension springs to rotate the brake around its bolt for proper alignment. The OBW-4 features 10-, 11-, 12-, and 13-mm opening to fit most models of sidepull brakes.

Updated to fit an even wider range of hub, wheel and tire combinations with room to spare, utilizing a wider base structure and larger calipers. More accurate and easier to calibrate, the versatile TS-4.2 is solidly built to accurately self-center nearly any diameter wheel 16-inch to 29+ and any tire width up to 5-inches+. - Both uprights move simultaneously to always keep wheel centered in the stand - Accommodates tire widths up to 5-inches+ with or without brake rotor mounted - Speed knob to quickly change axle widths - Accommodates hub widths from 75mm to over 250mm - Precise operation and adjustability - Built in thru-axle adaptors - Machined, welded, assembled and calibrated in our factory in St. Paul, MN - Chrome plated and powder coated heavy gauge steel construction - Removable, replaceable nylon caliper tips to protect painted/anodized rims

These shop-quality L-shaped hex wrenches have a genuine Bondhus balldriver tip on the long arm (excluding the 10mm) for hard-to-reach bolt heads and a straight tip on the short arm for high-torque applications. The HXS-1.2 includes a handy portable tool organizer/holder and it's hinged for easy access. • Includes 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10 mm sizes • Wrench tips are precision chamfered for a clean, tight fit • Made from industrial-quality Bondhus Protanium high torque steel

Park's Professional Pedal Wrench features an angled, oversize head for maximum leverage. It has two 15mm wrenches at different angles, so you can maximize your leverage, and a long, round, vinyl-coated handle that won’t dig into your hand the way flat wrenches do. There's even a hole in the end for hanging the wrench on your toolboard.

Park handles all of your screwdriver needs with their Shop Screwdriver Set that includes 3mm and 6mm regular, and #0 and #2 Phillips screwdrivers. They feature heat-treated chrome-vanadium tips and shafts for maximum durability plus dual-density grips for top control and comfort.

If you have a bike with disc brakes, you'll want Park's Rotor Truing Fork. It allows you to gently adjust bent and damaged disc-brake rotors. It's made from high-quality steel and features 2 laser-cut slots for precise adjustments and a vinyl handle for comfort and control.

Many new bikes do not include pedals. Park Tool's DP-2 Threaded Dummy Pedal easily threads into the drive side to take the place of a pedal when making adjustments during the assembly of these bikes. Use of the DP-2 is much quicker than using a pedal wrench to install and remove an actual pedal during assembly.

Commonly referred to as a 4th Hand, Park's Cable Stretcher pulls cables tight. Its one-hand operation and thumblock holds the cable so you can easily maintain cable tension while tightening cable fixing bolts and nuts. Made from chrome-plated and heat-treated steel and featuring cushion grips for comfort, the Park Cable Stretcher is a must for any serious mechanic.

Includes two rotating brushes, two sponges and two wicking pads already installed in a composite cartridge, ready to snap into the CM-25 Professional Chain Scrubber (sold separately.

Having trouble getting at internal spoke nipples? Park's Square Socket Internal Nipple Spoke Wrench comes to your rescue. The extra-long socket fits recessed nipples on most deep-section aero wheels. And, the ergonomic handle is comfortable even after you've built wheels for the entire team.

The BBT-29 is a double-ended bottom bracket wrench designed to fit 16-notch bearing cups with an outside diameter of 39mm (e.g. Shimano Dura-Ace 9000 series and XTR 980 series) as well as 16-notch bearing cups with an outside diameter of 48.5mm (e.g. FSA MegaEvo).

Park's Bottom Bracket Wrench has 2 ends to fit slotted bottom bracket adjusting cups and cups with raised 16mm wrench flats common on older English and less-expensive bicycles. Please ask if you have any questions whether this wrench is right for your repair.

Park's Hex Wrenches are every mechanic's best friend. They are constructed from industrial quality steel for durability and feature chamfered tips for a precision fit. And, their convenient L shape is perfect for jobs that require lots of leverage or for getting to hard-to-reach bolts.

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 36-notch tool fittings, including Praxis Works M35 bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive. Fits 36-notch bottom bracket tool fittings with a major diameter of 51–53 mm and a minor diameter of 50.7 mm, including: - Box® Two Oversized M35 - Praxis Works® M35

Park's BBT-32 is the perfect solution for the home mechanic installing and removing Shimano and ISIS Drive splined 20-tooth bottom bracket cups. Made from investment-cast steel, the BBT-32 utilizes a flat tooth profile to ensure maximum engagement with the bottom bracket cup and features 32mm wrench flats.

Park Tool's Thru Axle Adaptors make it possible to adapt all Park Tool Truing Stands to work with 12mm, 15mm, 20mm, and 25mm thru axle front wheels, as well as Cannondale Lefty wheels (each sold separately). The TS-TA also work with the rear 135mm thru axle hubs in the TS-2.2 and TS-3. The TS-TA when used in the TS-8, TS-25, TS-15, TS-7 or TS-5 will work with all rear thru axle hubs. For thru axle hubs greater than 135 (142, 150, 157, etc.) in the TS-2.2, use the TS-2TA Thru Axle Adaptors (sold separately).

The TRY-1 Parts and Beverage Tray is twelve inches in diameter, looks great on the workbench and will carefully hold anything from derailleurs to tallboy cans to pint glasses. It has a tacky surface coating that will keep objects from sliding around and can easily switch from business to party by placing your favorite beverage on its no-slip surface.

Designed and built specifically for a wide variety of bicycle Torx compatible work, the THT-1 is a set of eight common sizes of professional quality T-Handle star-shaped wrenches built for speed, efficiency, leverage and a perfect fit. Soon to become your favorite Torx compatible set, the THT-1 includes a handy tool holder that mounts to any vertical surface, including pegboard and solid surfaces (fasteners not included). - Carefully selected combination of Chrome Vanadium and S-2 tool steels - T6, T8, T10, T15, T20, T25, T30 and T40 Torx compatible wrenches included - Unique anodized aluminum Speed Spinner makes running long bolts in and out quick and effortless - Sliding T-handle creates increased leverage and multiple access positions - Tool holder is included with the set and mounts to any wall, bench or tool box, perfectly positioning each wrench for easy access and storage

Park Tool's Replacement Chain Tool Pin fits Park Tool's CT-6, CT-6.2, and CT-6.3 Chain Tools (each sold separately). • Made from hardened alloy tool steel • NOTE: The 985-1 will also push out the chain rivet completely from the chain side plate.

Specially designed for crank bolts, freehub removals and pedal installs and removals, Park's Hex Tools are built for speed, leverage and comfort. Their super-precise hex heads and dual-density, ergonomic handle mean the HTs may soon become your new favorite tools.

Park Tool introduced the bicycle world to the 3-way hex wrench set over 30 years ago. Our 3-way wrenches fit perfectly in the palm of the hand and provide excellent leverage, making them a favorite of countless shop mechanics worldwide. AWS-3 FEATURES - 2mm, 2.5mm, and 3mm hex set - Wrenches made from industrial tool steel, through hardened and tempered for long life - Chamfered tips for a perfect fit

Park's Threadless-Fork Saw Guide ensures a straight, accurate cut on threadless forks. Slide on the guide, clamp it down and the hardened-steel cutting slot ensures a perfect cut every time. You can remove as little as 1mm, too.

Frame Taps will become a lifesaver at some time for virtually every mechanic. As with all Park Tool Taps, these are made of high carbon steel and are precision ground. Park Tool Frame Taps cut easily and fit conventional tap handles. For water bottle, toe clip, fender and rack bosses. The TAP-8 is 5mm x 0.8 for use with water bottle, toe clip, fender and rack bosses.

Park Tool is world-renowned for their bicycle industry tools, and their pumps are no exception. Keep yours up to speed and working smoothly with these rebuild kits. - 1096K: Contains one #1081 head as well as one #1075 plunger gasket for older PFP-2 and first generation PFP-4 floor pumps. Also compatible with second-generation PFP-4 floor pumps. - 1096X: Contains one #1096R head, one #1472 fitting, and one #1075 plunger gasket for second generation PFP-4 floor pumps. Also compatible with PFP-2 and first-generation PFP-4 floor pumps. - 1096Z: Contains one #1096R head, one #1472 fitting, and one #1087 plunger gasket for PFP-5 and PFP-7 floor pumps. Also compatible with PFP-3, PFP-6, and PFP-8 floor pumps.

Park's professional-quality, precision-sized spoke wrenches are hardened and chrome plated for long service. Wrenches are vinyl coated in one of four colors indicating the size at a glance. You will find these wrenches in virtually every professional bike shop and every shop mechanic's personal tool stash. Make sure you have the sizes you need in your home toolbox and bike bag.

A handy tool designed to make installation and removal of bicycle electronic shifting wires and batteries quick and easy. The durable composite body features our iconic three-way wrench shape and prevents scratching of expensive components. Angled ends allow for safe installation and removal of Shimano Di2 E-tube EW-SD300; wires in tight spaces. Universal coin cell tool helps remove and install battery covers on SRAM AXS and other electronic accessories. - Compatible with Shimano Di2 E-tube, EW-SD300 wires (nominally 3 mm OD connector) - Not compatible with Shimano Di2 E-Tube EW-SD50 wires (nominally 5 mm OD connector) — use the Park Tool EWS-1

Park's Bladed Spoke Holder is a must for building and truing wheels that feature bladed spokes. It has 4 different size slots to fit a wide variety of bladed (aero) spokes from .08 to 2mm wide. It holds them safely in place to prevent twisting as you turn the nipple to true and tension the wheel.

Park Tool's Replacement Chain Tool Pin (2-Pack) fits Park Tool's CT-1, CT-2, CT-3, CT-3.2, CT-5, and CT-7 Chain Tools. • Made from hardened alloy tool steel • Uses 7mm or 9/32" 12 pt box end/socket • Sold singly or in pairs