A 1/8 HP compressor with switch and regulator is economical and suitable for all airbrushes. It is capable of delivering 20-40 PSI depending on airbrush being used. The Paasche D500 is an oil-less piston compressor. The R-75 is a low pressure regulator with a 100 psi gauge and moisture drain. This regulator gives control of operating pressure as well as assisting in furnishing clean, dry and regulated air.