Crank Adaptor Tool for Shimano Hollowtech II, Cr-Mo Steel,. Heat Treated. For use with 8mm hex key. Use one way to tighten the cups into the frame with an 8mm allen key. Turn the tool around to tighten the pre-load cap on the left hand crank. Not suitable for Truvativ bottom brackets.
Best Price: £11.95 from Merlin Cycles