Shell Size: 68 millimeter Fitment: Replacement for BB-UN26 68*123, 68*127, 68*110mm Square Taper Bottom Bracket Interface: Square Taper, Bearings: Steel Package Includes: 1x Square Taper Bottom Bracket Warm Note: Please check the part numbers and the compatible models mentioned in our description to make sure the compatibility before purchasing BB-UN26 Square Taper Bottom Bracket 68 * 123/127 / 110mm (Black 1Pcs) (68x123mm)