The fixed pattern spray nozzle is engineered to deliver uniform droplet sizes. It includes a filter and adjustment screw which allows you to reduce the spray pattern down to 75 percent of its rated distance. Its low-angle trajectory helps improve efficiency by minimizing wind drift. The female inlet threads are compatible with Orbit, Hydro-Rain, and other major brands. The fixed pattern nozzle is available in center strip, side strip, and end strip patterns. For optimum efficiency pair the fixed pattern spray nozzle with a professional series pressure-regulating spray body set at 30 PSI. For outdoor irrigation use with cold water only.