Wolf Tooth PACK-41 Bottom Bracket Tool

Large finger notches so you can start threading the cups by hand

3/8'' square socket or 1'' for ratchet/torque wrench
Each socket has 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
BBS4116: 16 notch for 41mm diameter notch pattern, Ultegra BBR60