The BBT-5/FR-11 fits the splined 12-tooth Campagnolo® bottom bracket cups found on the square type spindle systems (Campagnolo® Record™, Chorus™, Centaur™ and Athena™ )
The BBT-5/ FR-11 removes and installs all Campagnolo® cassette lockrings (including 11-speed).
BBT-5 uses a 1" hex shape, and will fit the FRW-1