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. Specification: Functions: 1/2" Dr., Material: Alloy steel. .
Key Features:Chrome steel 6805 bearings.,Fully CNC machined external cups.,Co-moulded bearing shields.,Wave washer spacers included.,BSA threading: 1.37" x 24T.,Fits 68/73mm wide brackets.,Fits 24mm spindle cranksets.,Cup tool: 16-notch 44mm OD (BTL-27L).,Made of: 7075 T6 aluminium..
Key Features:Chrome steel BB30 bearings.,Inner diameter of 30mm and outer diameter of 41.96mm.,Co-moulded bearing shields.,Wave washer spacers included.,Fits 68/73mm wide brackets.,Fits 30mm spindle cranksets..
Press fit chrome steel BB90-95 cartridge bearings. Inner diameter of 24mm and outer diameter of 37mm. ,Spacers for adapting to BB95 included. ,Fits 90/95mm wide brackets. .