The Fuji industrial spray equipment air cap set #4 offers general fine finishing using your spray gun; it is suitable for nitrocellulose lacquers, oil-based paints, auto enamels, varnishes and even latex house paint. This air cap set is intended for use with the Fuji XT spray gun and does not fit older Fuji spray gun models. This air cap set is a complete needle, nozzle, and jet kit with a standard 0.055-inch nozzle size for medium output; the needle and nozzle are made of durable stainless steel.