Amazon.com
You love your DeWalt rotary hammer. You don't love breathing in all that junk. This attachment is a sweet, simple solution. A powerful motor pulls in the waste as you drill, filtering it down to 99.95% efficiency at 5 microns and keeping it out of your lungs. It attaches easily and doesn't change the balance of the tool in hand, something that surprised us. The cup comes off without a struggle for emptying and has a nice capacity, too. But we think the coolest thing about this is the two-second shutoff delay. It keeps extracting for two seconds after you've flipped the drill's power switch to off, sucking up every last bit of dust. It's not cheap, but it definitely does its job.
--Kris Jensen-Van Heste
Amazon.com Product Description
The DEWALT D25300D Dust Extraction for D25303K and D25304K attaches to DEWALT rotary hammers and pulls in waste as you drill, keeping your lungs clear from debris. The dust extraction attachment filters up to 99.95 percent of air pollutants as small as 5 microns in size. The attachment also features a two-second shutoff delay that keeps sucking after you've flipped your drill's power switch.