... cylinder, high air flow 2) Oil free, piston type; No air polluted. 3) Double air pressure switch. Product Name: Double Cylinder ... gauge. 4) Double air pressure switch.Switch 1, low pressure switch, for airbrush purpose.Switch 2, high pressure switch, for other high pressure air tools ... Auto stop, start at 3BAR(43psi), stop at 4BAR(57psi) switch 2: MAX PREEURE 6BAR(86 PSI)Working pressure: 0~6 barWeight ...