steel, with extra toughness, good wear resistance, anti-rust and anti-breakage Widely used in household, auto parts, woodworking, professional machinery maintenance and disassemble, and not easy to fall off during use Anti-rust,, high force, tight and flexible Suitable for installing on electric wrenches, pneumatic drills, electric drills Helps you get out of situations where you need motivation but always have a full Angle, Manufacturer: yanwuwa