THREADED TO 30MM ABEC-3 BB - Required tool(s): (WRENCH-BB48-44) Wheels Mfg Double End BB Wrench, 16-notch BB tool - 48.5 / 44mm. - Bearings: Enduro ABEC-3 - Color: Black - Bottom Bracket/Frame Interface: ISO/English or BSA Threaded (1.37 in x 24 TPI) - Bottom Bracket Shell Width (mm): 68mm - 73mm - Bottom Bracket Shell I.D.: 33.6-33.9 mm - Crank Spindle Diameter: 30mm - Crank Spindle Length: At least 104mm* Notes: - For use with 30mm diameter cranks with a spindle length of at least 104mm. - Will not work with standard BB30 cranksets. PLEASE MEASURE YOUR BB30 CRANK SPINDLE LENGTH!