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