This OSHA Table 1-compliant Dust Extractor works with the cordless DCH293 and the corded D25333 1-1/8 in. Rotary Hammers. It features an OSHA 1926.1153-compliant Dust Box Assembly. With a filter cleaning mechanism and a HEPA filter, it removes 99.97% of airborne particles 0.3 microns or greater. This Dust Extractor has a powerful fan assembly for increased suction during high-performance drilling. It allows users to drill up to 1 in. diameter, to depths up to 10 in. Install large diameter sleeve, stud/wedge, and screw anchors using our onboard dust extractor.