The Bottom Bracket Wrench removes and installs Shimano Hollowtech II, Race Face X-type, FSA MegaExo, Campagnolo Ultra-Torque and TruVativ Giga X-pipe bottom brackets. Laser cut for a precise fit, one end of the BBT-9 securely engages the 16 cup notches, while the other end engages the 8 internal splines of the crankarm adjustment cap.