DEWALT Impact Socket Set DWMT19251 1 4 Inch Drive Combination Socket Kit (48 Piece CR440 Steel Black Oxide DirectTorque Metric SAE Automotive Hardware) Tackers the screw threaded geometry of these the screw threaded geometry of these fasteners provides a superior mechanical bond with wood fibers Outfitted with the tool free Snap Lock Plus quick change mandrel system What's Included Brand Manufacturer: DEWALT Model Number (SKU): DWMT19251 Product Type Category: Combination Impact Socket Set Total Master Piece Count: 48 Pieces Anvil Input Drive Size: 1 4 in Square Drive Measurement Scale Profile: Dual SAE Fractional and Metric Fastener Profile Geometry: 6 Point Hex Grip Socket Depth Configurations: Standard Shallow and Deep Well Included Core Tool Metallurgy: Heat Treated CR 440 Alloy Steel Matrix Surface Anti Rust Armor: Chemical Black Oxide Finish Coating Anvil Interface Security: Retaining Pin Hole and O Ring Groove Ready Identification Technology: Thermal Laser Etched Ablation Markings Organized Carry Case: Yes (Hard Shell Plastic Container) UPC Code Field: 076174192513