Shimano Dura-Ace FC-7710 Track Crankset<br /> Hollow-forged aluminum<br /> 144mm bolt circle<br /> Intended Use<br /> Track Bolt Pattern<br /> 5-Bolt Chainring<br /> BCD: 144 mm<br /> Color: Polish<br /> Spindle Length Needed: 109.5 mm<br /> Spindle Interface Type: Octalink V1<br /> Weight: 440 grams<br /> Includes: BB Bolts, Chainring Bolts, and C-ring Wrench<br /><br /> Painstakingly designed to realize the ultimate balance of light weight and rigidity, Dura-Ace track components deliver a winning advantage for the banked oval tracks across the world.