The brass industrial grade spray nozzle provides effortless one hand operation: by actuating the operating lever the valve is opened/closed and the jet power is regulated from spray to concentrated jet. Durable nozzle constructed of a high quality brass and steel combination. 1/2" NPT female inlet. Maximum operating pressure is 350 psi. Suitable for hot water up to 122 degree F. The adjusting screw on the back of the gun allows you to fix the desired form of jet. The fixing clamp for the operating lever allows permanent service. 6.6 GPM flow capacity. Made if brass.