Bottom bracket standard: ISO/BSA
Tube width bottom bracket sleeve: 33.70 mm I.D.
Thread re-cutting and face milling: BTS-1, 691, 692, 690
Face milling only: BFS-1 / BTS-1, 690, 681, 682
#691, #692, #690 included with BTS-1
#681, #682, #690 included with BFS-1