FR-5 Cassette Tool

Park FR-5.2 Cassette Tool
Park FR-5.2 Cassette Tool. Lossens or tightens the lock ring that holds your single or multi gear on tight. you also need a chain whip tool like the park HCW-16 or figure out another way to hold the gear from moving when you attempt to loosen it.
Thin wall construction allows use without removal of cones and locknuts.

Heat treated alloy tool steel is durable
One inch base fits wrench or bench vise with ease
Fits Shimano, SRAM, SunRace, SunTour, Chris King and other cassette lockrings
Does not fit Saint or CenterLock OS
Features 12 splines that are approximately 23.4mm across