Widely used by the model enthusiasts The nozzle of this air pen is only 0.3mm , so it can only spray inks and dyes as well as properly diluted paint The practical cordless compressor is light , portable , rechargeable , easy to carry and use This double action spray does not require a switch , just press the triggers to work , the air is sprayed back , the liquid is sprayed , you can control the liquid release freely and it stops working automatically when the triggers is released This feed with 0.3mm needle and nozzle combination allows for finer control of paint and less overspray , the knob at the end of the spray to adjust the density and volume of the spray, Manufacturer: Watreketal