Standard Pack = 1 piece(s). Air Inlet Size=1/4 NPT; Average Air Consumption=5 CFM; Brand Name=Universal Tool; Exhaust Type=Side; Features=Safety lock-off throttle, Maintains speed under load, Heavy duty spiral gears, Ergonomic composite grip, Best for heavy grinding and MRO applications; Free Speed RPM=10000; HP=0.9; Model Number=UT8780-1; Spindle Thread=5/8-11; Style=Right Angle; Wheel Size=4.5;