SDS-max Hammer Drilling Dust Extraction Attachments, 12 in
Replaceable brush ring provides dust seal for a wide range of bit diameters|Rubber seal maintains suction on the drilling surface|It is optimized for drilling diameters from 1 1/2 in to 5 in but can accommodate up to 6 in if the brush ring is removed|The attachment features two unique air chambers: one allows the drilling bit to pass through when drilling into the work surface|The second air chamber is designed to maintain suction to the wall during the drilling application