1. Promote the stable operation of bit. The noise from drilling is reduced.2. The dust-proof effect is better than that of ordinary type. Drill dust cover can prevent electric drill and hammer from being damaged due to dust entering into the interior.3. The drilling dust-proof device can prevent the dust from flying when drilling, which is conducive to health and indoor hygiene. To prevent dust from falling into your eyes, clothes or the floor.4. The adjustable drill cover can be used on a variety of home projects that require drilling. The bowl attachment fits drills of any brand without any adjustments needed.5. This handy device fits onto drill bits and catches the dust created from drilling holes in drywall, wood, metal, concrete, and other materials.How to use the electric drill dust collector:1. First twist off the clear lid,o attach the dust catcher to your drill bit.2.Insert the drill bit into the base of the attachment, ensuring that the round brush is fitted around your drill bit.3.Then replace the lid, and you're ready to catch dust.4.To empty the attachment, just twist off the lid and empty the dust.Specifications:Name:Electric hammer drill dust coverType: drilling tool dustproof deviceScope of application: 4-10mm drill bitsColour:Blue + TransparentMaterial:ABSSize:8.8x4.4x5cmPackage Contents:3 * Shockproof Dust CatcherOnly the above package content, other products are not included.Note: Light shooting 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.