Hunter Sprinkler PSU04 PS Ultra Series 4 Inch Pop-Up Sprinkler, 4" PSU-04 4" models are retro-compatible with existing PS Spray bodies, which allow for a quick and easy upgrade This is the Flush Plug version that comes without a nozzle or filter screen Enhanced cap for more durability, easier handling, and extended riser seal life Two-piece ratcheting riser Male threaded riser to accept all female nozzles