Park Tool SR-18.2 Sprocket Remover/Chain Whip

Park Tool SR-18.2 Sprocket Remover/Chain Whip With a Park Tool SR-18.2 Sprocket Remover/Chain Whip; you can easily remove a fixed gear sprocket or single speed cassette using the chain whip; or use the 1″ box-end wrench to install them with a compatible freewheel or cassette lockring tool (sold separately). The sturdy construction will endure years of use as the hardened pins keep the chain securely in place.