Designed for 12 spline 23.4mm diameter tool fittings which is the most common tool fitting found on 7-12 speed cassette lockrings, and can also be found on some disc brake lockrings. Made from heat treated alloy tool steel.

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
Hex-shaped base of tool fits 1" (25.4 mm) socket or wrench
12mm guide pin stabilizes the tool when used with 12mm thru axle hubs