1/4” female national pipe thread inlet. 3.5mm orifice multi regulator nozzle. Used when high and low pressures are needed. This nozzle easily switches between a solid or flat spray pattern without having to change nozzles. The low pressure mode is great for the introduction of downstream soaps. The spray pattern adjusts from a solid 0° to a flat 80° spray pattern with a twist of the nozzle head. 300° F. 3,200 PSI.