BBB BottomThread BSA Bottom Bracket [BBO-39]

• Chrome steel 6805 bearings.
• Fully CNC machined external cups.
• Co-molded bearing shields.
• Wave washer spacers included.
• BSA threading: 1.37" x 24T.
• Fits 68/73mm wide brackets.
• Fits 24mm spindle cranksets.
• Cup tool: 16-notch 44mm OD (BTL-27L).
• Made of: 7075 T6 aluminum.