Specification Brand : TONE BulletPoint1 : Drive: 0.4 inches (9.5 mm) BulletPoint2 : Opposite Side Dimensions: 0.8 inches (21 mm) BulletPoint3 : Total Length: 1.3 inches (32 mm) BulletPoint4 : Material: Metal BulletPoint5 : ▶【100% SATISFACTION GUARANTEE】-Free replacement insure your products purchase against manufacturer defects. Color : Silver CompatibleFastenerDescription : 0.375 inches CustomerPackageType : 1 DriveSystem : Hex ExternallyAssignedProductIdentifier : 4953488155914 ExternallyAssignedProductIdentifier1 : 0755327943744 ExternallyAssignedProductIdentifier2 : 755327943744 ExternallyAssignedProductIdentifier3 : 05024209958943 FinishType : Brushed GpsrSafetyAttestation : 1 ItemDisplayWeight : 0.2 kilograms ItemLength : 1.3 inches ItemName : TONE Socket 6-Point 3S-21 3/8" Inch Drive 21mm ItemPackageDimensions_Height : 4.2 centimeters ItemPackageDimensions_Length : 2.9 centimeters ItemPackageDimensions_Width : 4.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : square-drive-sockets Manufacturer : トネ(TONE) Material : Metal Material1 : Metal Material2 : Carbon Steel Material3 : Alloy Steel ModelName : 3S-21 ModelNumber : 3S-21 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : 3S-21 ProductDescription : FEATURES ⓵ High temperature quenching, greatly improve the torque, the quality of this impact driver socket adapter is excellent. ⓶ Self-locking device, the impact driver socket adapter uses the spring ball head to play the role of convenient use and anti-slip and non-falling. ⓷ Forged from Chromium-Vanadium steel. The impact driver socket adapter set has high hardness and good toughness through heat treatment. ⓸ It uses metal safety buckles, and is marked with different colors and specifications, so that it is easy to select the appropriate impact driver socket adapter clearly and quickly. ⓹ The socket adapter set is suitable for cordless drill, electric screwdriver, etc. It is used with socket wrench. Solve the troubles of DIY enthusiasts, automobile maintenance and other fields.