Sioux Vertical Wheel Grinder, Bare Tool ToolKit, 7 in Wheel dia, 5811, 6000 RPM, 1 hp, 30 CFM Under Load38 CFM Free Speed, 90 PSI Air, 14 in NPT Air Inlet, Side Exhaust Location, Thumb Throttle, 38 in Minimum Hose Size, 80 dB, Type 27 For Wheel Type, 72 in L