The Saturn III is the smart choice for medium area gear drive rotor sprinkler heads. It is ideal for medium area coverage with easy-to-adjust coverage radius of 15-25 ft. Adjustments take just seconds with a simple flathead screwdriver. The large removable filter resists clogging and is simple to clean. The Saturn III has a 4 in. pop-up height and uses a 1/2 in. FNPT connection. The whisper quiet operation eliminates noise. Coverage radius from 15 ft. to 25 ft. and part- to full-circle spray pattern ensures even and complete water coverage. The Saturn III is the perfect update for old, failing or inefficient sprinkler systems.