For quick attachment and release of discs and grinding wheels without the need for wrenches Beautiful Finishes: The underside has a lightly frosted texture to increase friction. The nut can firmly lock the sanding disc and is not easy to slip Premium Material: This angle grinder collet nut is made of high-strength alloy material which is non-deforming, withstands 40N torque and 12000rpm high rotating speed /min. Its quality is guaranteed and its service life is long Quick release nut with M14 thread for Bosch, Black & Decker, Dewalt, Flex, Hitachi, Metabo, Makita and many other brands. Precise and easy saves considerable time Why do you choose me 1. Quick assembly nuts are made from high strength alloy materials and can be used in high strength working environments. 2. Quick-fit nuts have a good matte texture to reduce the risk of injury by slipping the nut. 3. Compared with traditional nuts, it has a quick lock structure and can be used to tighten bolts with bare hands. 4. The quick