PF30A Outboard ABEC-3 BB for 29mm SRAM DUB Compatible Cranks - BlackThe 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. Specifically designed for installing SRAM DUB Compatible cranks in Cannondale PF30A (46mm ID, 73mm wide asymmetrical BB shell) frames. Bottom Bracket Includes: BB Cups with bearings 2