The Toro 570 Plastic Center-Strip Nozzle Shrub Spray Sprinkler Head features a 1/2 in. FNPT inlet that makes it compatible with a 1/2 in. NPT riser. This sprinkler head is compatible with any Toro 570 Matched Precipitation Rate (MPR) nozzle and includes a center-strip nozzle that provides a 4 ft. x 30 ft. spray pattern and minimizes water waste.