Multifunctional universal wrench made of 40CR chrome vanadium steel, high hardness and high torque. The surface is coated with anti-rust oil, anti-penetration, and corrosion-resistant, effectively pre more→venting the tool from rusting, and suitable for a variety of operating environments. Automatic fitting of a variety of common nuts and fittings, such as hexagonal nuts, tube nuts, octagonal screws, round pipes, shaped screws, and so on. Suitable for repairing tube fittings, hexagon bolts, pressure gauges, shaped bolts, round tube fittings, and so on. Features: Premium Material: Multifunctional universal wrench made of 40CR chrome vanadium steel, high hardness and high torque, rust, and corrosion …