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. The DWH050K Large Hammer Dust Extraction has two Interchangeable driling heads for optimum dust removal. One for holes up to 1-1/2" and one for holes up to 2"
