Park Tool BBT-9 Bottom Bracket Tool - Hollow Tech WORKSHOP Simply attach to your seatpost

Simply attach to your seatpost

Never expose to open flame

Cartridge Axle

high mileage and efficient rolling thanks to BlackChili Compound

Park Tool BBT-9 Bottom Bracket Tool - Hollow Tech WORKSHOP Simply attach to your seatpostThe 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 bottom bracket cups. The other end of the tool engages the 8 internal splines of the crank arm adjustment cap on Shimano Hollowtech II systems. The BBT 9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm. Specifications Fits 16 notch tool fittings with a major diameter