The pop-up spray head is a feature-rich pop-up spray body in 2-inch and 4-inch riser stem heights with pre-installed female nozzles in full, half, and quarter patterns. The slim body allows it to fit in tight locations. The riser spring which creates the pop-up action is made of corrosion-resistant stainless steel for years of reliable operation. The ratcheting riser stem allows you to adjust the direction of the spray after installation. The spray body inlet has standard 1/2-inch female pipe threads (FPT) which connect to Blu-Lock and Riser-Flex fittings, male pipe thread (MPT) fittings, as well as 1/2-inch Schedule 80 PVC and cut-off risers. The 15-foot fixed pattern nozzle includes a filter and radius adjustment and are replaceable with all Orbit, Hydro-Rain, and female-thread nozzles, as well as nozzles from other major manufacturers. These spray heads do not have pressure-regulating riser stems and are not for sale in California and other states which require pressure regulation. For outdoor irrigation use with cold water only.