The Evolution is really special and a successful piece among the airbrushes. It has a solid system construction, excellent finish and a smooth double-action function which makes the device since its introduction to one of the most widely used The Evolution is really special and a successful piece among the airbrushes. It has a solid system construction, excellent finish and a smooth double-action function which makes the device since its introduction to one of the most widely used airbrushes. With a flow system the Two in One models contain two nozzle sets in different sizes, providing fast and flexible conversion of the unit for all applications. Like all Harder & Steenbeck airbrushes the Evolution is also equipped with solvent - resistant PTFE seals. Include two nozzle sets of 0,2 mm and 0,4 mm and two color cups of 2 ml and 5 ml.