This utility locking nuts suitable for varieties electric machines such as angle grinder, cutting machine, electric circular saws. With this tool, you can work more easily, come on and try it, it will not let you down. Specifications: Material: 45# steel ∮D: 50mm Package size: 45 * 45 * 20mm / 1.8 * 1.8 * 0.8in Package weight: 110g / 3.9ounce Packing list: 1 * M14 Locking Nut