HomeHigh grade CrMo steel sprockets for your single speed set up. Our extra wide sprocket flange will protect your lightweight alloy free hub body.Single Speed Cog 13T-20TSKU: 40216AU$15.00PriceMaterialCrMo SteelCategoryDriveTooth CountSelectBrandReverseQuantityAdd to CartSpecsSize: 20T Flange: 7mm Tooth thickness: 1,8mm