A superb choice for general purpose spraying, Iwata Revolution Series Dual Action Airbrushes offer excellence plus affordability for students and hobbyists, as well as for industrial use. Whether you choose gravity feed or siphon feed, both deliver internal mixing, and soft, effortless, fine-to-wide coverage and quality atomization at low air pressures. - Iwata Revolution Series Dual Action Airbrush - HP-BCRBCR DUAL ACTN 2OZ BT - The Iwata Revolution Siphon Feed Dual Action Airbrush features a unique comfort handle. With siphon feed, you can work with multiple bottles that hold larger volumes of spray medium than gravity feed airbrushes. This model includes a 1 oz (30 ml) bottle, and you can purchase additional bottles to have filled and ready for quick color changes or for covering larger areas.