About this item Easy to use: This quick release nut is a quick lock structure that can be tightened very firmly and will not loosen easily. It can be tightened or loosened without using a wrench. The process of use is very simple and quick. Exquisite workmanship: The bottom has a slightly frosted texture to increase friction, and the nut can lock the sanding disc firmly and is not easy to slip. Excellent Material: This collet nut is high strength alloy material, high strength work does not deform, withstand 40N torque and 12000 high rotating speed rpm, the quality is guaranteed and the service life is long. Wide range of applications: the collet nut is suitable for all angle grinders with M14 interface on the market, Hilti and of course also for all angle grinders not mentioned such as diamond cutting discs, cup-shaped sanding discs, diamond plates and other types of sanding discs.