The Park Tool FR-5.2 Cassette Lockring tool will help you with installation and removal of your cassette, use with the SR-12.2 Chain Whip tool.
The FR-5.2 is designed to fit the most common tool fitting found on 7-to-12 speed cassette lockrings, including models made by Shimano®, SRAM®, and others. Also fits disc brake lockrings and lockring adapters with 12 internal splines, and top caps of some Rock Shox® suspension fork models. Thin wall construction allows use without removal of cones and locknuts. The 1" hexagonal base can be used in conjunction with a socket, wrench, or bench vise. Heat-treated alloy tool steel construction for a lifetime of use.
Fits 12-spline tool fittings with an approximate outer diameter of 23.4 mm including:
Center bore for axle clearance is 12 mm.
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