Shimano BB-ES300 Octalink V2 Bottom BracketsFeatures:Fits Shimano Octalink V2 Spline Cranksets Crankarm fixing bolts not includedSpecifications:Defined Color: Gray Weight: 270 Bottom Bracket Shell I.D.: 1.37 Spindle Interface Type: Shimano Octalink V2 BB Shell Width (mm): 73 BB Shell Width (mm)_10: 73 BB/Frame Interface: English BB/Frame Interface_11: English Spindle Length: 118