The Park Tool FR-5.2GT is designed specifically for use when removing and installing cassette lockrings from thru axle hubs.

-Utilizes a 12mm guide pin to stabilize the tool during use
– Fits 12-spline cassette lockrings from Shimano, SRAM (including 1x), SunRace, SunTour, Chris King and others (23.5mm diameter)
– Fits some Shimano and similar disc brake rotor lockrings