EBEST 0.2, 0.3, 0.5MM Dual action Side feed AirBrush Set Spray Painting Gun Kit with hose, nozzle, needle for Makeup, tattoo, hobby The Dual Action trigger controls both air and colour which allows changing the width of the line, the range of value and the opacity of paint without stopping. Widely used in ad paster, Tattoo Nail ,commercial illustration, cover design, ad photography, hanging calendar, painting, architecture drawing, compositive painting, etc Comes with two different type side feed fluid cup, allows different work. Internal mix means air and paint mix inside the air brush. Air and paint come together inside the head assembly to produce a thoroughly atomized fine dot spray pattern.