This tool is designed to remove non-threaded BB30 and Sram DUB bottom brackets from frames. The tool safely removes bottom bracket bearings from the frame without the need for a hammer. It comes with two interchangeable, dedicated pullers: a 30mm puller for the BB30 standard and a 29mm puller for the Sram DUB press-fit bottom bracket. When used with the 30mm puller, the tool is also compatible with many other bottom bracket standards that use 30mm inner diameter bearings. A rubber O-ring on the tool ensures safe use, preventing scratching the frame.