Specification Brand : HARFINGTON BulletPoint1 : Size - Square drive: 3/8"; Metric 6-point socket: 12mm; Total length: 30mm / 1.18". The specification is clearly marked on the surface of the socket, which is easy to identify and improves work efficiency. BulletPoint2 : Material - Our impact sleeves are made of chrome-molybdenum (CR-MO) steel SCM-440. After cold forging, the surface is smooth and flat, and the hardness and toughness will be greatly enhanced, which can withstand the high torque generated by the impact tool under high pressure. It has high wear resistance and corrosion resistance, stable performance, can be in a high friction environment for a long time, and has a long service life. BulletPoint3 : Features - The surface of the sleeve is phosphated, which not only improves the lubrication effect and effectively reduces the friction loss between the sleeve and other parts, but also improves the rust resistance of the sleeve on the original basis, making it suitable for long-term use. In addition, the concave hexagonal design can grasp the flat surface of the fastener instead of the corner, preventing the nut and bolt from rounding under high torque applications. BulletPoint4 : Application - Deep impact sockets are used for disassembly and assembly of eye screws and some screws with special shapes. They are suitable for maintenance and assembly of various large equipment, automobile maintenance, household maintenance, etc. BulletPoint5 : Note - The interface of our impact socket is a recessed hexagonal bolt nut interface. Before use, you need to confirm the specifications of the nut or bolt to be disassembled and assembled to ensure that the screw can be completely tightened or loosened. When using an impact socket, be sure to wear personal protective equipment such as earplugs, goggles and gloves to protect yourself from noise, debris and accidental. Color : Black CompatibleFastenerDescription : Hex nuts and bolts with 3/8" hexagonal recess DriveSystem : 3/8" Drive DriveSystem1 : Square DriveSystem2 : Tri-Groove ExteriorFinish : Nickel ExternallyAssignedProductIdentifier1 : 0045242603886 ExternallyAssignedProductIdentifier2 : 045242603886 FinishType : Black Oxide Finish GpsrSafetyAttestation : 1 GradeRating : Industrial IncludedComponents : Shallow Socket ItemLength : 2.48 inches ItemName : HARFINGTON 2pcs Deep Impact Socket 3/8" Square Drive by 12mm Metric 6 Point Socket 30mm (1.18") Long CR-MO Steel Industrial Grade Flip Socket for Home Auto Hex Nuts Bolts Repair, Black ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : square-drive-sockets Manufacturer : HARFINGTON Material : Alloy Steel MetalType : Carbon Steel ModelName : Teng Tools 50mm Bit Adaptor - 1/4 Inch Drive Hex - 1/2 Inch Drive Square -ACCSDA1412 ModelNumber : c9c15b3a-1c38-43d4-896e-7ab4adca108b NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : hta241029hh001921 ProductDescription : Our impact sleeves are made of chrome-molybdenum (CR-MO) steel SCM-440. After cold forging, the surface is smooth and flat, and the hardness and toughness will be greatly enhanced, which can withstand the high torque generated by the impact tool under high pressure. It has high wear resistance and corrosion resistance, stable performance, can be in a high friction environment for a long time, and has a long service life. The surface of the sleeve is phosphated, which not only improves the lubrication effect and effectively reduces the friction loss between the sleeve and other parts, but also improves the rust resistance of the sleeve on the original basis, making it suitable for long-term use. In addition, the concave hexagonal design can grasp the flat surface of the fastener instead of the corner, preventing the nut and bolt from rounding under high torque applications. Deep impact sockets are used for disassembly and assembly of eye screws and some screws with special shapes. They are suitable for maintenance and assembly of various large equipment, automobile maintenance, household maintenance, etc. The interface of our impact socket is a recessed hexagonal bolt nut interface. Before use, you need to confirm the specifications of the nut or bolt to be disassembled and assembled to ensure that the screw can be completely tightened or loosened. When using an impact socket, be sure to wear personal protective equipment such as earplugs, goggles and gloves to protect yourself from noise, debris and accidental.