For installing/removing Shimano Hollowtech II external bottom bracket cups (not compatible with SM-BB9000), also fits external install/removal notches on 35mm spline CenterLock rotor lockrings for thru-axle hubs (XTR, Saint, XT, SLX)
- Works with other non-Shimano outboard bearing bottom brackets
- Open wrench design works well on full suspension frames that have pivots close to the bottom bracket shell.