Portable mini airbrush mini compressor AS-186 featured: 1,Piston type,oil free 2,It could be continuous working 3,With a gauge ... Especially quiet while working 7,with 3.0L air tank Portable mini airbrush compressor AS-186 is an excellent alternative to ... below 50 PSI. Compact, portable and quiet, it provides an oil free air supply that is ideal for designers, modellers, artists, cake decorators ...