Bosch Sds Max Universal Core Bit Dust Collection Attachment For Rotary Hammers

the hdc250 is a flexible dust collection attachment for sds max hammers for drilling into concrete with core bits 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 2 unique air chambers 1 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 adaptor 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