Quick Release Nuts: M14 thread quick release nuts for quickly attaching and detaching diamond discs, grinding wheels, abrasive discs and other accessories. Anti-slip Design: The bottom has a fine texture. Adjust the washer to ensure that the nut fixes it firmly without slipping. Clean the abrasive, mandrel and quick release nut before use to prevent foreign objects from getting stuck. Material: Made of high-strength alloy, it works with high strength without deformation, can withstand a torque of 40Nm and a high speed of 12,000 rpm, ensuring a longer service life. Compatibility: Suitable for all angle grinders with M14 interface on the market; Suitable for most types of diamond cutting discs, grinding wheels, cup wheels, diamond plates, etc. Attention: Please check the nut before use to avoid accidents and make sure it is not broken or damaged. Diameter 49 mm, height 13 mm, weight 111 grams. It fits perfectly. Powerful product and super fast delivery! It is the perfect accessory for