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Brand- Super B
BSA bottom bracket
The Super B Tools TB-98150 is a set for brushing and milling the threads of the bottom bracket boxes type BSA, very high precision that allows a tapper to review the threads of the bottom bracket box.
Once the threads have been reviewed, the taps are left in place to be used as guides to keep the cutters aligned that will make the faces of the bottom bracket box parallel.
The TB-98150 comprises BSA (English pitch) type tapers 1,370 x 24 TPI, one with right-handed thread for the left shell and the other left-handed for the right shell.