Features Secure Fit Design: The recessed hex joint ensures a fit, preventing slippage during use for reliable performance every time Firm Grip Technology: Enhanced thread arrangement provides a strong grip, making bolt removal quick and effortless, saving you valuable time Carbon Steel Build: Crafted from high-quality carbon steel, this socket boasts high hardness and exceptional torsion strength, ensuring long-lasting durability -Resistant Coating: The black phosphate finish offers superior resistance, significantly extending the service life of your socket under various conditions Versatile Lengthened Design: At 78mm, this socket is compatible with electric drills, pneumatic drills, torsion wrenches, and ratchet wrenches, enhancing your toolset's functionality Features: 1、The socket is designed with a recessed hex joint, with standard openings and no slippage when tightened. 2、The tight thread arrangement provides a firm grip and makes it easy to remove bolts. 3、Forged with carbon steel material, high hardness and strong torsion, and not easy to wear. 4、With black phosphate coating, good resistance, can prolong the service life of the socket. 5、78mm lengthened design, suitable for use with electric drills, pneumatic drills, torsion wrenches, ratchet wrenches, etc. Specification: Item Type: Hex Socket Hex Socket Size: Approx. 10mm / 0.39in, 11mm / 0.43in, 12mm / 0.47in, 1m / 0.5in, 14mm / 0.55in Material: Carbon steel Total Length: Approx. 78mm / 3.1in (allowable error of machinery manufacturing ± m / 0.1in) Purpose: Suitable for hex nuts Package List: 1 x Hex Socket Package List 1 x Hex Socket