Specification Brand : Teng Tools BulletPoint1 : [ EXTRA STRONG ] The impact socket is made from heavy duty chrome molybdenum (CR-MO) steel for exceptional strength and flexibility. BulletPoint2 : [ LASTS FOR YEARS ] Black phosphate finish for maximum protection and durability. BulletPoint3 : [ GREAT GRIP ] 6 point high torque design grips flat sides of a fastener, not corners, preventing round-off. BulletPoint4 : [ INSTANT IDENTIFICATION ] The impact socket features roll stamped markings to ensure permanent and instant socket identification. BulletPoint5 : [ SAFE TO USE ] Designed for use with a locking pin and ring to increase safety when working with pneumatic tools. BulletPoint6 : Made in USA Color : Red CompatibleFastenerDescription : 0.5 inches DriveSystem : Hex ExternallyAssignedProductIdentifier : 5020385126589 ExternallyAssignedProductIdentifier1 : 020209077764 ExternallyAssignedProductIdentifier2 : 0020209077764 ExternallyAssignedProductIdentifier3 : 00099575805431 FinishType : Black Phosphate Finish IncludedComponents1 : 3-pc 1/2 in. drive 18. inch socket rail IncludedComponents2 : 18 inch 3-rail tray ItemName : Teng Tools 21MM 1/2 Inch Drive 6 Point Metric Shallow Chrome Molybdenum Impact Socket | Mechanic Tool | Hand Tool - 920521N ItemPackageDimensions_Height : 8.8 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 4.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : square-drive-sockets Manufacturer : Teng Tools Material : Chrome Molybdenum Steel MeasurementSystem : Metric ModelName : Teng Tools 21MM 1/2 Inch Drive 6 Point Metric Shallow Chrome Molybdenum Impact Socket | Mechanic Tool | Hand Tool - 920521N1 ModelNumber : 920521N1 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : 920521N1 ProductDescription : It is ideal hex socket, H17 (17mm) sockets work with tools such as ratchets to quickly and easily tighten hex drive fasteners. ProductSiteLaunchDate : 2019-04-16T11:57:58.499Z Size : 21mm Style : 3-Rail SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 27111700