Wolf Tooth Bottom Bracket Tool - BBS3916, 16 Notch, 39mm

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.

• 16 notch BB socket for 39mm diameter notch pattern, Shimano 9000 series, DURA-ACE, BB92, XTR BB93
• 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