Applicable to: bimetal hole saws, glass hole saws, etc. for hole saws with a shank diameter of no more than 10mm/0.39inch and a shank length of no more than 20mm/0.79inch. Medium size, suitable for 16mm/0.63inch-125mm/4.92inch hole openers. Simple and quick operation: quick and easy to connect to increase operating convenience. When working with an impact drill, simple tools can help achieve better results. Easy to install and clean: silicone. Easy to install and clean, installation only takes a minute. The dust cover of the electric hammer can effectively prevent dust from spreading and inhaling into the lungs. No marks on the ceiling: When you use this drill dust bucket, you don't have to worry about damaging the ceiling. For wall materials, the dust container will collapse like a piston when it is sealed to the surface. The best part is that it will not leave marks on the ceiling. Stability: Threaded mount, built-in bearing, easy assembly and disassembly, can be fixed on the wall.