Park Tool BTS-1 Bottom Bracket Tapping and Facing SetThe Park Tool BTS 1 is a professional bottom bracket tapping and facing set. It features precision hardened cutting steel components designed for accurate maintenance of bicycle frames. This tool set cleans and cuts threads while facing the bottom bracket shell to ensure proper installation. The set includes a handle, right and left hand English taps, and a facing cutter. These components work together to prepare the frame for precise bottom bracket