Multipurpose Airbrush Set: This airbrush is used for painting. It includes air compressor, gravity feed airbrush. Use for temporary tattoos, airbrush makeup, airbrush nails, airbrush shirts, cake airbrush. Airbrush: The small air compressor does not have automatic on / off function, so the best work partner is a single action gravity feed airbrush gun. How to spray: Install the air brush machine into the air pump, fill the liquid into the cup, hold the mini air compressor in hand, press it, and the compressor and mini spray gun start to work.