DeWalt® heavy duty dust extraction vacuums and accessories are designed specifically for wood, concrete and drywall applications. The units are compatible with DeWalt® woodworking, concrete and drywall power tools and provide users with a complete dust extraction system. Additionally they help to improve air quality on the jobsite or in the shop and allow the user to finish faster. The dust extraction vacuums feature the VCSTM (Vacuum control system), which combines an automatic filter clean component (D27904 only), power tool actuation, variable speed control and a twist-lock hose for increased ease of use and productivity. DeWALT® Filter Bag, Non-Reusable, 8 in L, For Use With: D27904 12 gal Dust Extractor, Paper, Brown