Designed for 12 spline 23.4mm diameter tool fittings - the most common tool fitting found on 7-12 speed cassette lockrings, and can also be found on some disc brake lockrings and Rock Shox® suspension fork top caps. Made from heat treated alloy tool steel. Thin wall construction allows use without removal of cones and locknuts.
Fits 12-spline cassette lockrings from Shimano®, SRAM® (including 1x), SunRace®, SunTour®, Chris King® and others
Fits most disc brake lockrings with 12 internal splines from Shimano® and other brands
Fits the top cap of some Rock Shox® suspension fork models including Pike®, Lyrik™, SID®, Revelation™, Reba®, and Paragon™
Hex-shaped base of tool fits 1" (25.4 mm) socket or wrench
Center bore for axle clearance is 12mm
Always use a skewer or axle nut to hold tool firmly in place during removal and installation
The FR-5.2 features the same tool pattern as the FR-5, with deeper splines for a greater range of compatibility -- any component that is compatible with the FR-5 is compatible with the FR-5.2.