AW Pro 1/3 HP Twin-Cylinder Airbrush Compressor 3-7 Bar 3.5L Air Tank for Decorating Body Art Premium, twin-cylinder airbrush compressor with smooth operating 3.5 liter (1 gallon) air tank Twin-cylinder airbrush compressor with precision-forged pistons delivers impressive power (1/3 HP) with low noise Features two power modes to suit any task, Double switch 1:Auto start at 3 bar,Auto stop at 4bar; Swicth 2: Max 7 Bar, Maximum power mode provides up to 100 psi Auto-start/stop feature saves power and reduces motor & heat while maintaining enough pressure to operate most airbrushes Delivers excellent power (1/3 HP, 1.3 CFM) with ultra-quiet operation (59 db)