The ThreadFit 30 bottom brackets are designed and built to be durable, serviceable, and silent. Bearings can be serviced with the Chris King Grease injector tool.Included Fit Kit #3 is designed to mate the ThreadFit30 bottom bracket with a 30mm spindleKing made-in-house bearingsKing Lifetime WarrantyItem SpecificationsBB Shell Width (mm)68BB Shell Width (mm)73BB/Frame InterfaceEnglishBottom Bracket Shell I.D.1.37Defined ColorBlackSpindle Interface Type386 EVOSpindle Interface Typee*Thirteen P3 ConnectSpindle Interface TypeRaceFace/Easton CINCHSpindle Interface TypeRotor 3D+Spindle Interface TypeZipp Vuma Chris King Threadfit 30 Bottom Bracket Bottom Brackets UPC: 841529103250