Specification Brand : Generic BulletPoint1 : Our team is here to assist you anytime. Whether you have a question about a product, need help with your order, or simply want personalized recommendations, we're just a message away. Hassle-Free Returns: Easy returns and exchanges simplify the process. BulletPoint2 : Sprocket 40B21H 5/8" Bore Heat Treated Type B Finished Bore W/Keyway and Set ScrewsFor #40 Roller Chain21 ToothOutside Diameter =3.620"Pitch Diameter = 3.355" BulletPoint3 : ✅Feature:Sprocket tooth surface hardening treatment, sprocket overall blackening treatment, rust, corrosion resistance. BulletPoint4 : ✅Use: Sprocket does not need lubrication, easy maintenance, can maintain good stable operation for a long time. BulletPoint5 : ✅Package Content :1 x Roller Chain Sprocket (included 2pcs set screw). ExternallyAssignedProductIdentifier : 4680708369218 IncludedComponents : NO ItemName : 40B21H-5/8" Type B Finish Bore Sprocket for #40 Roller Chain 21 Tooth ItemPackageDimensions_Height : 1.57 inches ItemPackageDimensions_Length : 4.72 inches ItemPackageDimensions_Width : 4.72 inches ItemTypeKeyword : roller-chain-sprockets Manufacturer : rustic203 Material : Alloy Steel ModelNumber : 50 Roller Chain Sprocket NumberOfItems : 1 NumberOfRows : 1 NumberOfTeeth : 25 PartNumber : 6523663443 ProductDescription : Our team is here to assist you anytime. Whether you have a question about a product, need help with your order, or simply want personalized recommendations, we're just a message away. Hassle-Free Returns: Easy returns and exchanges simplify the process. ProductSiteLaunchDate : 2024-03-26T10:31:45.598Z Size : 3/4" Bore 19T Style : Used for #50 Chain SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1