Check the listing for details. 12 Points Deep Socket 3/8" Drive 9mm Nickel Plating Flip Sleeve 4.7" Long. Condition: New. Listed at 19.69 USD. Our extra-long sockets are made of chrome-vanadium steel, which is hardened at high temperatures for high hardness, toughness, and wear resistance. They can withstand the high torque generated by high-pressure impact tools without wearing out. Polished nickel-plated for waterproof corrosion and rust resistance, they are suitable for various working environments.12-point opening for double hexagonal (12-sided), hexagonal, and square fasteners, allowing quick access to fasteners from multiple angles, providing a secure grip and preventing deformation and slippage in high-torque applications. The extended design ensures the socket has extra-deep extension, ensuring a tight connection between nuts and engine bolts even in confined spaces.