Easy to use: This quick lock nut is a quick lock structure, which can be tightened very firmly and will not be loosened easily. It can be tightened or loosened without using a wrench. The use process is Very simple and fast Fine finish: there is a slight frosting texture at the bottom to increase friction, L&# 39; The nut can lock the sand wheel disc and is not easy to slide Good material: the fastening nut is made of high-strength alloy, which can work with high strength without deformation, and can withstand 40N torque. The high speed is 12,000 rpm, and the quality is guaranteed Long service life Wide range D&# 39; Application: L&# 39; Fastening nut is applicable to all D&# 39; grinding machines Angle and M14 interface in the market, Dewalt, Bosch, Makita, Metabo, Hilti, of course, are also applicable to all D&# 39; sanders An angle not mentioned, such as a disc Used for cutting diamond, cup grinding plate, diamond plate and D&# 39; Other types of grinding discs