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. Features: Uni-que locking structure, new design, give you a better using experience. Suitable for angle grinders and cutting machines with 1200W speed of 11000r/min and diameter of polishing plate 125, has a wide applications. This locking nuts require the M14 connection thread, please check before order. Made of fine steel material, has a long service life, so you do not need to change it often. You can change it by yourself, which can save your time and money. 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