T he DURA-ACE FC-9000 crankset uses advanced HOLLOWTECH II technology and a 4-arm design to reduce weight while maintaining efficiency. An improved chain guide provides surefire shifting and decreased chain drop. It uses a 110mm pitch circle diameter. FEATURES -Optimum Power Transfer Lighter weight, maintain efficiency Combined with the improved chain guide design to reduce chain drop -4-arm construction crankset Maintains high rigidity and reduces weight -HOLLOWGLIDE -110mm Pitch Circle Diameter -50-34T -Weight: 683g (50-34T, with bottom bracket) This crank set has been used, but is in good shape. There is cosmetic wear on both crank arms from use and normal wear on chainrings.