For cleaning and removing surface dust, weld slag, or paint. Adjustable bayonet-type needle housing lock allows adjustment without special tools. Precision heat-treated needles for maximum performance. Features: Blows per minute: 5,000 BPM; Air inlet: 1/4" NPT; AVG Air Consumption: 4.3 CFM; Air Working Pressure: 90 PSI; Air Exhaust: Front; Barrel Stroke: 1.25 inch, 32mm; Needles: 12(3mm Dia.)-needles; Overall Length: 12 inches, 295mm; Overall Dia.(w/o trigger): 1.5 inches; Net Weight: 2.9LBS, 1.3KGS ; Include: 1pc--------12in Air Scaler 1pc-------connector 1pc-------empty oil can 1pc-------Instructions