SHIMANO 105 FC5650 170mm 50-34t 10-Speed Crankset BB Shell Width: 68/70mmChain Compatibility: Shim/SRAM 10Chainring BCD: 110mmChainrings: 34/50TCrank Color: SilverCrank/FD Type: Road CompactCrankarm Length: 170mmCrankarm Length: 170mmCrankset BCD: 110mmCrnk Clr: silverInterface: HT2*Length: 170mmPedal Spindle: 9/16"Rings: 34-50Speed: 2x10Spin: Not ApplicableSpindle Interface Type: Hollowtech IIWeight: 722g