Precision-balanced steel workings run smoothly with less vibration.Improved durability, ergonomics, and noise level maximize comfort and control for prolonged use.Pneumatic power exceeds the capability of standard electric sanders, supplying hours of continual use.HEPA-rated Clean Sanding Filter Bags eliminate the need for a vacuum hose and improve operator ease of use.Low-profile, balanced design optimizes the performance of 3M abrasives.Includes: Hookit Low Profile Back-Up Pad (20356), Clean Sanding Filter Bag, Filter Bag Adapter, and Hose Seal.Maximum 12,000 RPM.Diameter 6″.