With full-circle coverage, this spinning lawn sprinkler head covers areas up to 40 feet. It has a -inch FNPT (Female National Pipe Thread) connection that allows it to connect to a riser. This spinning garden sprinkler can be used as a single lawn sprinkling head or it can be incorporated with a full above ground garden sprinkling system. Features and Benefits: 360-degree coverage is complete and uniform, Has a gentle spray perfect for watering gardens and plant areas, Has -inch female threading for riser attachment, Covers areas up to 40 feet in radius, Features a durable plastic spinning design.