Star New Century SG4000 gravity feed air spray gun range feature comfortable ergonomic spray gun bodies with stainless steel fluid needle and nozzle sets and 600 ml gravity feed pots. This range of gravity feed air spray guns is designed to operate best between 35 and 40 pounds per square inch inlet air pressure. Set up models available include 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.5mm and 3.0mm versions.