【Versatile Compatibility】Designed for use with electric wrenches, small pneumatic tools, 1/2" angled rods, and large ratchet wrenches, offering flexibility for various automotive repair and maintenance tasks. 【High-Quality Construction】Forged from chrome-vanadium steel using cold heading and heat treatment processes, ensuring high hardness and excellent impact resistance for durability. 【Secure Connection】Features a 1/2" square drive with a recessed interface for high-precision fit and firm grip, preventing slippage during high-torque applications. 【Deep Hex Design】Extended hex socket allows for operation in confined spaces, making it easier to access and remove fasteners in hard-to-reach areas. 【Anti-Drop Features】Equipped with a pin hole and fixing groove, compatible with retaining pins and O-rings to secure the socket to power tools, reducing the risk of accidental drops. 【Corrosion Resistant】Treated with a special electrophoretic coating for enhanced rust resistance, suitable for use in various working environments. Specifications: Size: 13mm Total Length: 200mm Socket Depth: 41.5mm Socket Outer Diameter: 20mm Socket Inner Diameter: 13mm Drive Size: 1/2 inch Material: Chrome-vanadium steel Finish: Electrophoretic black coating