The DEWALT D25303DH Dust Extractor for 1-inch 20V MAX SDS Hammer is a powerful dust extraction system with built in motor for increased suction and high tool performance. Some of the many features include: 2-second power-off delay which ensures dust extraction to continue after drill is switched off, a replaceable dust nozzle, and a durable clear high capacity dust box. Up to 5/8" diameter carbide drill bit may be used. It offers Quick release for easy tool assembly and disassembly, and has a compact inline design. The replaceable HEPA filter removes 99.97% of airborne particles 0.3 microns or greater. This extractor allows you to easily adjust depth stop for accurate anchor hole depths. This cordless dust extraction system fits DEWALT 1" 20V rotary hammers DCH273P2 and DCH273. Includes: D25303 Dust Extractor, Side Handle.