SRAM S300 Courier GXP Crankset BB Thread Type: EnglishChain Compatibility: 9-Speed,Shim/SRAM 10Chainring BCD: 130mmChainrings: 48TCrank Color: BlackCrank/FD Type: Single RingCrankarm Length: 165mmCrankarm Length: 165mmCrnk Clr: BlackCrnk Clr: mirror blackInterface: GXPLength: 165mmPedal Spindle: 9/16"Rings: 48Speed: 1x?Spin: Not ApplicableSpindle Interface Type: TruVativ GXPWeight: 900g