Bottom Bracket Wrench IINew design features improved spline geometry and 3 8" drive pocket for use with torque wrenches Fits 12 notch X 46mm diameter external bearing bottom bracket cups Designed to stand up to the harsh conditions of professional use Precision laser cut design with ergonomic cushioned grip Fits 12 notch external bearing bottom bracket cups including SRAM DUB, Zipp Vuma, Race Face Cinch, Rotor BSA30, Hawk Racing BB3086, and more Tool Type: Bottom Bracket