RainCoach Self-Propelled Traveling Sprinkler Easy to operate self-propelled traveling sprinkler, provides irrigation to large open areas Combines 3/4-inch brass impact head and rotating sweep arms for full, even coverage Angling the sweep arms controls speed/irrigation levels (arm span is 4 feet and 9 inches) Operating ranges 110 - 145 feet wide coverage x 450 feet run length Includes 6 nozzles for varying pressure and coverage situations (11.5 to 22.4 gpm., 55 to 75 psi)