HG Trigger-Type AirbrushTop model of the Spray Work HG Airbrushes. Can be used for extended periods of time without your finger getting tired. Capable of spaying lines under 1mm thick. HG Trigger Type Airbrush is of the double action type, which means that initial spray will emit mostly air to enable fine adjustment of paint spray volume. This high grade airbrush features cup molded on to airbrush as one metallic piece. Nozzle diameter 0. 3mm