The Wolf Tooth bottom bracket socket wrenches are tools for the installation and removal of bottom brackets with external bearing cups. They are made from aircraft-grade aluminum in Minnesota. The wrenches feature large finger notches that allow for easy hand tightening of the bearing cups. They have a 3/8" square drive or a 1" hex for use with a ratchet or torque wrench. Most wrenches include either a Shimano bearing preload tool or a 16mm hex for compatibility with Race Face Cinch cranksets.

Compatibility details:

• BBS3916: 16-notch BB socket wrench for a notch pattern with a 39mm diameter, compatible with Shimano 9000 series, DURA-ACE, BB92, and XTR BB93.
• BBS4116: 16-notch BB socket wrench for a notch pattern with a 41mm diameter, compatible with Shimano 105, Ultegra BBR60 and 6800, as well as XT MT-800.
• BBS4416: 16-notch BB socket wrench for a notch pattern with a 44mm diameter, compatible with 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.
• BBS4612: 12-notch BB socket wrench for a notch pattern with a 46mm diameter, compatible with BB386, Race Face 30mm spindle, TF47, SRAM DUB, RaceFace Cinch, Zipp Vuma, Rotor BSA30, Hawk Racing BB3086, Cane Creek Hellbender, and more.
• BBS4816: 16-notch BB socket wrench for a notch pattern with a 48mm diameter, compatible with FSA 386 MegaEvo, Wheels PF30, BSA30, BB386, and more.
• BBS4912: 12-notch BB socket wrench for Praxis T47IB.
• BBS5212: 12-notch BB socket wrench for Chris King T47.
• BBS5216: 16-notch BB socket wrench for DUB T47.