Upgrade :Unlike other drill dust cover, our drill dust collector is upgraded with unique design and better dustproof function, especially perfect for ashing when drilling the side wall and celling. and Invention Design :Double-layer dust-proof design, which perfectly collects dust without spreading to the outside. When you use it on the side wall or punch holes to the ceiling above,Bearing design prevents heat and wear. Effectively Prevent Dust Diffusion - Suitable for No more than 141mm, Electric hammer dustproof cover can effectively prevent dust diffusion and inhalation into the lungs. Simple& Fast Operation:Attaches quickly and easily for added user convenience. Simple tools can help you have better health when you are working with a hammer drill. Great Buy & Protect Health:Suitable for electric hammer, electric pick, percussion drill, hand drill and so on. Protect from dust.It would be a worthwhile choice. Colour: white Material: silica gel Size: 116x88mm Package Contents: 1 * Dust cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.