Two interchangeable drilling heads for optimum dust removal.  One for holes up to 1-1/2" and one for holes up to 2".  Tough rubber seal allows for adhesion to most masonry surfaces. Two hole cleaning nozzles match nozzle to hole size for optimal hole cleaning.  Fits DW universal hose connector which allows for quick connection to hose and swivel capability.  Includes: 5/16" hole cleaning tube, 9/16" hole cleaning tube, 1-1/2" hole drilling head attachment, 2" hole drilling head attachment, dust extractor body and kit box.