Double Dustproof-The upgraded perforation dust collector uses a double-layer dustproof design. It can be used on side walls and ceilings to perfectly collect dust without being exposed, effectively preventing the spread and inhalation of dust into the lungs.Quality Materials-Silicone Material high quality, high elasticity, freely stretchable, safe and odorless, suitable for drills up to 160mm in length and 4-14mm in widthCompatible with Multiple Models-Quick and easy installation , compatible with most electric drills, such as hand drills, lithium drills and impact drillsBearing Design-Bearing transition effectively prevents heat and wear when the electric drill is running. The yellow material on the outside of the bearing is sturdy and can be held by hand, so you don't have to worry about being abraded by the electric drill to perform the most precise drilling. Drill Dust Collector High quality silicone material, high elasticity, freely stretchable, safe and tasteless, the bearing can be hand-held, making the brick hole more comfortable, compatible with a variety of models of electric drills, is an indispensable and effective tool for electric drills Upgraded Drill Bit Dust Cover Double-layer dust-proof design, not easy to drop drill dust, can be used on side walls and ceilings, perfect dust collection