Heat treated alloy tool steel, one inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts. Fits all Campagnolo® cassette lockrings Also fits Campagnolo® Record™, Chorus™, Centaur™ and Athena™ bottom brackets The outside diameter of the BBT-5/FR-11 is 22.8mm, and has 12 splines. Packaged carded: BBT-5/FR-11C
