Unior 1671.2/4 Bottom bracket and Bosch gen. 3 & 4 lockring tool, 8 notch

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