General description UNIOR BOTTOM BRACKET SOCKET BSA30 is a precision CNC machined tool designed for the installation and removal of various external bottom bracket cups. Made from aluminum billet and finished with anodized red, this socket ensures durability and a precise fit without damaging aluminum external bottom bracket cups. The knurling on the side enhances grip for manual threading, while the 1/2" square drive allows compatibility with torque wrenches, ratchets, and fixed handles. Technical specifications Material: Aluminum billet Finish: Anodized red Drive type: 1/2" square drive