The Standard Silvering Spray Gun is a dual-head spray gun used for spraying two materials that need to mix after spraying. Great for Chroming, Silvering Mirrors or any other dual component spraying. The wet sections are 303 Stainless Steel which allows spraying of corrosive fluids. The sprayer can be fed by siphon bottles (USP-QT), gravity fed or pressure fed from a tank. Two fluid couplings at fluid inlet, for 1/4" tubing, or two siphon bottles are needed.