Features:- The new PF30 Threaded bottom bracket will give you all of the same benefits as the well-loved original Wheels MFG PF30 BBs.- The two machined aluminum cups thread together ensuring the bottom bracket remains stable in the frame,increasing bearing life, and simplifying maintenance.- This means no more creaking, smoother operation, longer bearing life,and really quick bearing replacement.- Directly replaces all OEM PF30 bottom brackets.- Will accept 24mm and 24/22mm cranksets using Wheels MFG adapter shims.- Note: Use only bottom bracket tools compatible with 16-notch MegoEvo BB's. (FSA MegaEvo and Park Tool BBT-29). Specifications:- Bottom Bracket/Frame Interface: PF30, BB386EVO, Specialized Carbon OSBB, BBRight™ Press Fit- Bottom Bracket Shell Width (mm): 61mm to 86.5mm- Bottom Bracket Shell I.D.: 46mm- Crank Spindle Type: BB30- Crank Spindle Diameter: 30mm- Weight: 98 g- Material: Aluminum- Bottom bracket conversion: PF30 68/73x46- Bearing quality: ABEC-3