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 | The dust port is designed for Bosch 1 3/8 in vacuum nozzle but can be used with either 1 1/4 in or 2 in vacuum nozzles when used with the appropriate adapter | The system is universal and is designed to connect to a vacuum so that it can be used with any size hammer and can accommodate the full range of core bit diameters and drilling depth