Park tool BBT-9 bottom bracket tool

Master modern drivetrain maintenance with the Park Tool BBT-9. This essential tool precisely removes and installs external bearing crankset bottom brackets, featuring a 16-notch engagement for widespread compatibility with major brands like Shimano, SRAM, and more. Its dual-ended design also tackles 8-spline Shimano Hollowtech II crank arm adjustment caps and even 16-notch center lock rotor and Bafang mid-drive motor lockrings. Achieve shop-quality results and protect your components with this versatile, reliable essential