Park Tool Bbt - 5 / Fr - 11 - Bottom Bracket / Cassette Lockring Tool - Campy.
Braquet and Lockring puller with 1 "base for open-end wrench
Made from hardened tool steel, very slim designed, 12 teeth, 22.8mm diameter
Fits Campagnolo bottom bracket and cassette lock rings
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
gs
So Campagnolo® bottom brackets fits
The outside diameter of the BBT-5 / FR-11 is 22.8mm, and has 12 splines