4151-HL Features: -Vacuum Ready Random Orbital Sander with Loop and Hook Pad.-Directional exhaust muffler reduces noise while directing air away from operator.-Vacuum-ready dust evacuation keeps foreign matter away from motor and work surface.-Adjustable speed control up to 12000 RPM.-Hook and Loop pad enables convenient changing of pads and abrasives.-Performance Rating: Ultra Duty.-@ Load: 15.5 cfm.-Vacuum Ready: No.-Average Air Consumption: 8 cfm.-Air Inlet: 0.25".-Min. Hose Size: 0.31".-Orbit Diameter: 0.19".-Pad Diameter: 6". Specifications: -Sound (Pressure/Power): 78/91 dBA.-Rated Power: 0.2 hp. Dimensions: -Product weight: 1.92 lbs.