Truvativ Touro Polished Triple PS Crankset BB Shell Width: Power SplineChainrings: 30/42/52TCrank Color: Polished SilverCrankarm Length: 170mmCrankarm Length: 170mmCrankset BCD: 74/130mmCrnk Clr: PolishedCrnk Clr: polished silverInterface: PSLength: 170mmSpeed: 3x8/9Spin: Not Applicable