Park Tool Bottom Bracket Tool - Hollowtech II BBT-9

The BBT-9 is used to remove and install external bearing crankset bottom brackets. One end of the BBT-9 securely engages the 16 notches of the bottom bracket cups. The other end of the tool engages the 8 internal splines of the crank arm adjustment cap. The BBT-9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm.

WARNING: California Proposition 65

This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.