Park BBT-9 Bottom Bracket Tool Laser cut for a precise fit, one end of the BBT-9 securely engages the 16 notches of the bottom bracket cups, while the other end engages the 8 internal splines of the crank arm adjustment cap. The BBT-9 Bottom Bracket Tool is designed to remove and install a vast array of bottom brackets, all which are included in the list below. Features The BBT-9 also fits rotor disc lockrings which use 16 external notches. Related Articles: BBT-9 INSTRUCTIONSDISC ROTOR INSTALLATION AND TRUING CRANK REMOVAL AND INSTALLATION: TWO-PIECE COMPRESSION SLOTTEDSRAM(R) HAMMER SCHMIDT CRANKSET INSTALLATION Manufacturer's Part No: BBT-9 UPC: 763477000491 Compatibility Shimano(R) Hollowtech II(R) SCampagnolo(R) Ultra-Torque and Power Torque SRace Face(R) SFSA(R) SSRAM(R) STruvativ(R) SChris King(R) SPhil Wood(R) outboard bearing SHawk Racing SToken(R) SFulcrum(R) | Park Tool | Bbt-9 Bottom Bracket Tool For Shimano Hollowtech Ii Bb's