The Fuji industrial spray equipment air cap set #3 for your spray gun offers fine finishing and airbrush-style spraying; it is suitable for use with most water-based materials such as lacquers, sealers, cellulose, acrylics, synthetics, polyurethane, stains, varnishes, glitter paints, primers, and shading. This air cap set is intended for use with the Fuji XT spray gun and does not fit older Fuji spray gun models; it is not intended for use with latex house paint. This air cap set is a complete needle, nozzle, and jet kit with a 0.039-inch nozzle size for very fine atomization; the needle and nozzle are made of durable stainless steel.