All models of bottom bracket sockets are precision CNC machined tools for installation and removal of different external bottom bracket cups. They are made of aluminum billet and anodized red for durable finish and precise fit, that wont damage aluminum external bottom bracket cups. 1/2 square drive makes it easy to use with torque wrenches, ratchets and fixed handles.
T47 double sided bottom bracket socket features 16 and 12 notch interface with exchangeable adaptor to cover all different T47 bottom bracket standards.