The Dust Extractor Vacuum provides dust control for drywall sanding, concrete grinding, and drilling applications: every 30 seconds one of the filters is back-flushed with air to remove dust. A Universal Connector System (sold separately) offers individual adaptors that work with many of the company’s grinding, drilling, chipping, and demolition power tools. Cost: $529. DeWalt. 800-433-9258.www.dewalt.com.