Specification Brand : AB Tools-US Pro Label : AB Tools-US Pro Manufacturer : AB Tools-US Pro MaterialType : Chrome Vanadium Steel PackageDimensions_Weight : 0.7054792384 PackageDimensions : L:5.3543307032 X W:4.5275590505 X H:1.3385826758 PartNumber : AT143_2PK ProductGroup : Home Improvement ProductTypeName : FASTENER_DRIVE_BIT Publisher : AB Tools-US Pro Size : One Size SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/31yFJ0PjJ7L._SL75_.jpg SmallImage_Width : 75 Studio : AB Tools-US Pro Title : 1/2" Drive Breaker Power Knuckle Bar Replacement Head Socket 2 Pack Weight : 0.7 WeightUnit : pounds