UNIOR:
Product features
- material: premium flex plus carbon steel
- 1/2? square drive makes it easy to use with ratchets, fixed handles and torque wrenches
Compatible with:
- Shimano Octalink® bottom brackets with outside notches, Bontrager ® and Truvativ ® ISIS Drive ® type bottom brackets
- Bosch® Generation 3 and Generation 4 E-bike system front chainring lockring