Aluminum sheath,cold-forged steel cups, Boron Axel/spindle, Sealed bearings Finish: Phosphated cups anodized sheath For bike type: mountain bike, road racing bike etc. Spindle Interface: square taper. Package includes:1*Sealed bearing bottom bracket including cups+2 waterproof screw For Bike Type: Mountain Bike, Road Racing Bike etc;
Great length for Fixie or Single Speed Bikes;
Cartridge Sealed Bearing with Aluminium sheath;
Cold-forged steel cups;
Thread: BC1.37" x 24T English Thread;
Axle: Borron Steel (Square)
Finish: Phosphated cups anodized sheath
Weight 280g (9.87 oz)