Shimano Deore BB52 Hollowtech II Bottom BracketFeatures:Fits Shimano Hollowtech II CranksetsSpecifications:Defined Color: Silver Bottom Bracket Shell I.D.: 1.37 Spindle Interface Type: Shimano Hollowtech II BB Shell Width (mm): 83 BB Shell Width (mm)_10: 83 BB/Frame Interface: English BB/Frame Interface_11: English