Wolf Tooth bottom bracket sockets are tools for installation and removal of external cup bottom brackets. They are machined here in Minnesota with 7075-T6 aluminum. Large finger notches so you can start threading the cups by hand 3/8" square socket or 1" hex for ratchet/torque wrench Most sockets have either a Shimano bearing preload tool or a 16mm hex for use with Race Face Cinch cranksets Steel inserts for magnetic coupling compatibility with the Pack Wrench 16 notch BB socket for 44mm diameter notch pattern, Shimano BB80, BB5700, BB70, BB51, Enduro T47, Wheels T47, many from Hollowtech II, Campagnolo, Chris King, FSA MegaExo, Hope, SRAM/Truvativ GXP, Race Face X-type, Surly, and more 12 notch BB socket for 46mm diameter notch pattern, BB386, Race Face 30mm Spindle, TF47, SRAM DUB, RaceFace Cinch, Zipp Vuma, Rotor BSA30, Hawk Racing BB3086, Cane Creek Hellbender, and more Wolf Tooth Bottom Bracket Tool - BBS4416, 16 Notch, 44mm Wolf Tooth Bottom Bracket Tool - BBS4612, 12 Notch, 46mm
