Vändad Sturmey-Archer FCS722 42T 170mm 1-speed w/ double CG

Exceptional feature: Chain protection is on both sides of the chainring!Number of Teeth: 42TChainring Material: Hi-Tensile SteelRemovable Chainring: YESCrank Style: 4-Arm Spider CrankCrank Arm Material: Aluminum Forged / High-Polished AnodizedCrank Arm Length: 170mmChainring Bolts / Nuts: SCM435 ChromolyBolt Circle Diameter (BCD): 104mmChain: 1/2" x 3/32"Inner Chainguard: SteelOuter Chainguard: AluminumChain Line - 45mmTotal Weight: 771 gIncludes LEFT and RIGHT crank arms.