Shimano Dura Ace Track Bicycle BB-7700 ITA Italian Thread 70mm
BB Shell: 70mm Spindle Length: 109.5 mm Spindle Material: chrome-moly steel New in Box For Bike Type Track Bike Brand Shimano MPN IBB7700I09N UPC Does not apply Shell Width 70 mm Spindle Length 109.5 mm UPC Does not apply Part Type Bicycle part .
Shimano Dura-Ace Track BB-7700 Bottom Bracket Italian-threaded 70×109.5mm (M36)
・Thread Size: M36. ・Compatible with Shimano Octalink cranksets only. ・Hollow spindle design for reduced weight. This version is designed for Italian-threaded (ITA) bottom bracket shells with a 70mm shell width and a 109.5mm spindle length.