327 Features: -Air High Speed Tire Grinder.-Lever throttle for easy operation.-Rear exhaust keeps air away from you and your work.-Average Air Consumption: 15 cfm.-Spindle: 3/8" Chuck size.-Air Inlet: 1/4".-Performance Rating: Heavy Duty.-@ Load: 28 cfm.-Min Hose Size: 3/8".-Pad Diameter: 3/8" Chuck size.-Vacuum Ready: No.-Free Speed: 22000 rpm. Specifications: -Sound (Pressure/Power): 90.9/103.9 dBA.-Rated Power: 0.5 hp. Dimensions: -Weight: 1.6 lbs.