Specification Brand : jtfrkope BulletPoint1 : 11 Tooth C Sprocket 5/8 Bore,3/16 Key Way Cut. BulletPoint2 : Fits for 40,41,and 420 Chain. BulletPoint3 : Feature:gear of high temperature quenching heat treatment, high hardness,wear resistance,rust, corrosion resistance. BulletPoint4 : More Top-end speed compared to most stock 10 tooth that come with most Torque Converters. BulletPoint5 : Package Content :1 x Sprocket. ExternallyAssignedProductIdentifier1 : 0638967540262 ExternallyAssignedProductIdentifier2 : 638967540262 IncludedComponents : 11 Tooth C Sprocket ItemName : 11 Tooth C Sprocket for 40/41/420 Chain,5/8 Bore,3/16 Key Way Cut ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 1 inches ItemPackageDimensions_Width : 1 inches ItemTypeKeyword : roller-chain-sprockets Manufacturer : jtfrkope Material : Carbon Steel ModelNumber : AMZL-MK0424 NumberOfItems : 1 NumberOfRows : 1 NumberOfTeeth : 15 PartNumber : AMZL-MK0424 ProductDescription : Description: 11 Tooth C Sprocket 5/8 Bore,3/16 Key Way Cut. Fits for 40,41,and 420 Chain. Feature:gear of high temperature quenching heat treatment, high hardness,wear resistance,rust, corrosion resistance. More Top-end speed compared to most stock 10 tooth that come with most Torque Converters. Package Content :1 x Sprocket.