Ergonomically designed spray gun adjusts from mist to pencil-like stream and sprays from 5 to 800 PSI. Trigger lock allows for comfortable day-long use. Ruggedly built and precision machined from high-quality materials. Easily rebuilds from interchangeable parts, assuring years of dependable service. U.S.A. Pressure PSI 800, Fitting Size in. 3/4, Adjustable Spray Yes.