The Orbit(R) Saturn III(R) Pop-Up Gear Drive Sprinkler is a convenient and cost-efficient underground gear drive head for watering medium-sized lawns. The head throws water over a radius of 15' to 30', and can be adjusted for half or full circle spray distribution. The gear drive rotor is compatible with most major brands of rotors, and emits a quiet and even spray. | Orbit Saturn III Pop-Up Gear Drive Sprinkler