Super B BSA bottom bracket tapping tools TB-98150 (pair)

For English taps: 1.370” x 24 TPI right hand thread and left hand thread.

• A precision tool system made of high grade steel.
• It is a professional tool for tapping the threads in the bottom bracket shell of a frame.
• Guides to keep the included facing cutter perfectly square with the axis of the bottom bracket for cleanup of the faces of the bottom bracket shell.