Pulsating sprinkler allows for a full or partial circular spray patterns from 20 degrees to 360 degrees or for continuous rotation. Constructed for trouble free performance with ABS, UV stabilized plastic and a double-pronged rustproof ground spike that also ensures stability. Diffuser screw assures even water distribution for coverage up to 4,272 sq. ft. Adjust water flow by simply turning the orange knob on the top. The larger reaching water jets are ideal for irrigating wide-open areas. Works effectively with water pressure as low as 14.5psi up to 58psi.