An eye-catching streamline silhouette that is a Birzman signature design, this Specialist B.B. Wrench is compatible with Shimano® Cartridge or other similar 20-notch Ø31.6mm bottom brackets.
Made from extra-hard wearing materials, the Specialist Wrenches are a highly functional and durable combo to have in the workshop.
Modular extension bar is available (BM11-ST-MHE-K) to increase the leverage of the wrench.
CrMo / TPR