Rectangular Sprinkler Plus 180mē oscillating sprinklers are the ultimate lawn sprinklers. They are specially designed to give 100% even water coverage regardless of the water pressure. (1-10 bar). The sprinkler can water a rectangle or a part of a rectangle - adjustment is easy simply slide the red setting rings. Features an ultra reliable, water-powered , geardrive motor that operates at all water pressures - two year guarantee.