This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases Shimano Sora FC-R3000 Cranksets4-bolt crankset2-piece crank constructionAnodized aluminum and resin outer ringSteel inner ringItem SpecificationsDrivetrain Speeds9Rings50/34BB IncludedNoChainline/Hub Compatibility130 HubsColorGrayDefined ColorGrayCrank Intended UseRoadNumber of ChainringsDoubleCrank Length (mm)170Chainline/Hub Compatibility135/142 Road Disc Hubs > 415 mm ChainstayChainring BCD110 Shimano AsymmetricSpindle Interface TypeShimano Hollowtech IIPedal