Park Tool - FR-5.2GT Cassette tool
Park Tool
Price: $20.00

Utilizes a 12mm guide pin to stabilize the tool in use

Fits 12-spline cassette lockrings from Shimano ®, SRAM®,

SunRace®, SunTour®, Chris King® and others (23.5mm diameter)

Fits some Shimano® and similar disc brake rotor lockrings