QUIETDRIVE 90991 Powerhead, 35 Ft. Hose Agitator has a shutter placed over it which opens up to 90 degrees and allows for the best edge cleaning available Works great on hard floor, area rugs and carpet, easily adjusting between the surfaces Weighs only 1.5 lbs Double swivel neck for maneuverability around the tightest corners and furniture Compatible with major brands of central vac, including beam, nutone, electrolux, hayden, vacumaid, aggressor, vacuflo, md, canavac, cyclovac, air vac