Sime Luxor features a gear drive system that slowly rotates the sprinkler head in a smooth, quiet manner without the splashing action of an Impact Style Sprinkler. Sime Spinner Guns are smooth in action, gentle on tender crops, and can operate on lower pressures than many big sprinklers. Continuous rotation, slow reversing speeds, and uniform water patterns make them an ideal selection for stationary gun stands, traveling irrigators, and more. No tools are required to change the rotation of this sprinkler from part circle to full circle and the nozzles are interchangeable by hand! The Luxor is made of a durable nylon composite material that will stand up to years of use in the field. Quick change nozzles are included. Gear Drive Sprinklers operate differently from Impact Style Sprinklers. The internal gear drive mechanism allows the sprinklers to operate in a smooth, consistant manner.