Park Tool SR-18.2 Chain Whip/Sprocket Remover for 1/8in Cogs

• This combination chain whip and freewheel/lockring remover wrench is heat treated to prevent bending and flexing and works with any cassette or freewheel
• It also features hardened pins to keep the chain in place and a comfortable handle
• Hex opening fits Park Tool freewheel and cassette lockring tools

If you're only rocking one gear, sometimes you gotta do some cog swapping to ensure you have a tall or low enough gear for the ride. With Park Tool's Chain Whip/Sprocket Remover for 1/8in Cogs - SR-18. 2 you no longer have to settle for using a slipping 3/32in chainwhip while installing or removing 1/8in cogs, often leading to bloody knuckles. The opposite side features a 1in box end wrench if your one-speed bike happens to have a freehub, and the wrench is heat treated for strength while the molded handle provides comfort. Hardened pins keep the chains connected to the tool even if you're wrenching off a stubborn cog.