Front crankset Sturmey-Archer 170mm 1-speed black-42T

Crank Arm Spline Type: Square TaperNumber of Teeth (OPTIONAL): 42T OR 44T OR 46T OR 48TChainring Material: 7075 AluminumChainring Finish: Anodized Black + CNCCrank Arm Material: Forged AluminumCrank Arm Length: 170mmChainring Bolts and Nuts: SCM435 ChromolyBolt Circle Diameter (BCD): 130mmChain Size: 1/2" x 1/8"Chain Line - 43.5mmWeight: 701 g (42T), 726 g (44T), 751 g (46T) , 776 g (48T)Includes LEFT and RIGHT crank arms.