... .Finish: UCP CP BK 4.OEM available B.B Parts:Bicycle Axle and Bottom Bracket parts 1. material : steel, alloy ... be BK,UCP, CPWe have the following advantages:1. A manufacturer of producing bicycle spare parts as bottom bracket parts, saddles, axles, and ... products enjoy high quality.3. We have 10 years of experience in manufacturing bicycle parts. According to your requirement. Looking forward to ...