PressFit 30 Threaded Angular Contact bottom bracket - Black,The two machined aluminium cups thread together ensuring the bottom bracket remains stable in the frame, increasing bearing life, and simplifying maintenance,Serviceable, double lip sealed Angular Contact Enduro bearings,USA machined aluminium shell for superior function and durability,No more creaking, smoother operation, longer bearing life, and really quick bearing replacement,Directly replaces all OEM PF30 bottom brackets,Black anodized.