Wolf Tooth Bottom Bracket Tool - BBS4612 12 Notch 46mmWolf Tooth Bottom Bracket Tool BBS4612 12 Notch 46mm. 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