Sime Royal impact drive sprinkler with adjustable stops for full or part circle coverage. Quick change nozzle setup, jet stream breaker, and heavy aluminum construction with brass lower turning union with 2.5 inch female standard pipe thread connection. The Royal features the new drive arm concept that operates in an up and down motion instead of the normal side to side action of most impact style sprinklers minimizing vibration and operating on virtually any degree of slope. The Royal has a 25 degree trajectory.