Grex Genesis.XA Single Action Top Gravity Airbrush, 0.3mm Nozzle, 7ml Cup Easy to use single action push button with precise paint volume control knob Interchangeable top mount reservoirs with integrated paint cup for minute amounts of paint Internally mixed, cutting edge design for precise control of fine detailed work Replaceable solvent proof teflon seals, precision machined stainless steel nozzle and needle Convenient to clean design with short passageway from cup to nozzle for responsive feel