Park Tool FR 5.2G Cassette Tool Accessories Chain & Cassette Tools

Park Tool FR 5.2G Cassette Tool. The Park Tool FR 5.2G Cassette Lockring Tool with 5mm guide pin is exactly what you need to handle cassette lockrings from all the major brands as well as Shimano disc brake lockrings. Constructed of heat treated alloy tool steel, the tool's thin wall construction allows use without removal of cones and locknuts. The FR 5.2G has 12 splines that are approximately 23.4mm across.