- This ultra-durable and super-reliable Birzman bottom bracket socket tool is designed for use on Shimano Cartridge bottom brackets or other similar 20-notch, 31.6mm-diameter models, making installation and removal easy and hassle-free.Constructed from strong and corrosion-resistant alloy steel, this essential maintenance tool installs and removes cartridge bottom brackets with precision.Features:Functions: ½" DrMaterial: Alloy steel
- This ultra-durable and super-reliable Birzman bottom bracket socket tool is designed for use on Shimano Cartridge bottom brackets or other similar 20-notch, 31.6mm-diameter models, making installation and removal easy and hassle-free.Constructed from strong and corrosion-resistant alloy steel, this essential maintenance tool installs and removes cartridge bottom brackets with precision.Features:Functions: ½" DrMaterial: Alloy steel