Product Features:Precision-balanced steel workings run smoothly with less vibration, ideal for high production industrial environmentsImproved durability, ergonomics and noise level maximize comfort and control for prolonged usePneumatic power exceeds the capability of standard electric sanders, supplying hours of continual useHEPA rated Clean Sanding Filter Bags eliminate the need for vacuum hose and improve operator ease of useLow-profile, balanced design optimizes the performance of 3M abrasives