Quick release nuts: quick release nuts for quick attachment and loosening of diamond cutting discs, washers, sanding wheels and other accessories. Easy to use: this quick release nut for angle grinder has a quick release locking structure which can be tightened very firmly and is not easy to loosen. It can be tightened or loosened without using a wrench. The operation procedure is very simple and quick. Excellent material: Made of high-strength steel, high strength without deformation, with 1200W speed of 11000 rpm and a disc of 125 mm diameter polishing. Compatibility: suitable for most angle grinders available on the market, and for most types of diamond cutting discs, grinding discs, discs grinder, diamond plates, etc. Note: Please check the nut before use to ensure that it is not defective or damaged. Size: 13 x 50mm