BB-5500 Octalink V1 Bottom BracketsFeatures-Fits Octalink V1 Spline Cranksets FC-7700/FC-7703/FC-6500/FC-6503/FC-5500/FC-5501/FC-5503/FC-5504 cranks-Crankarm fixing bolts not includedItem Specifications-Spindle Length:109.5-Spindle Interface Type: Octalink V1-BB Shell Width (mm):70 mm-BB/Frame Interface:Italian-Bottom Bracket Shell I.D.:36