Park Tool BBT-5 / FR-11 Bottom Bracket Cassette Tool
Bottom bracket tools intended for both shop and consumer use.
• Uses a 1" hex shape
• Fits 22.8mm 12-splined Campagnolo bottom bracket cups found on the square type spindle systems (Record, Chorus, Centaur and Athena)
• Removes and installs Campagnolo cassette lock rings including 11 speed