About the Park Tool Cassette Lockring Tool This Park Tool Cassette Lockring Tool allows for the removal and installation of lockrings from thru axle hubs. Heat treated alloy tool steel, one inch base fits wrench or bench vice. Thin wall construction allows use without removal of cones and locknuts. The FR-5.2 has 12 splines that are approximately 23.4mm across. As a manufacturer of bicycle specific tools since 1963 you can safely rely on Park Tools' many years of experience. The world's largest bike tool manufacturer is the first choice of professional and home bicycle mechanics around the world. Key Features
