From the company that invented the first impact sprinkler, the 2045PJ Maxi-Bird is a rugged, high performance 1/2 inch riser mounted impact head that is ideal for watering slopes and large areas. Offering both full and part-circle operation and Rain Bird's unique Precision Jet tube design, the Maxi-Bird helps you save water and keep landscapes lush and green. Designed for a variety of uses where full circle sprinklers should not overthrow water into restricted areas. The body, arm, bearing sleeve and nipple are made of durable Delrin™ plastic. 1/2 in. (15/21) riser-mounted impact head used for slope and large-area, above-grade applications Straight-through flow for superior performance in dirty water Proven impact drive for maximum reliability Double-weighted arm for slower rotation and increased distance of throw. Powerful reverse action. Adjustable arm spring for low-pressure and low-gallonage operation Precision Jet tube (PJ™) minimizes side splash FP trip permits full- or part-circle operation (20° to 340°) Interchangeable, color-coded bayonet mount nozzles No tools required to change nozzles Includes blue #08 standard angle nozzle preinstalled. Coverage Radius: 22-45 ft Inlet: 1/2 in Features: Impact Drive Coverage Arc: 360° Full Circle or 20° - 340° Part Circle Material: Plastic Inlet Size: 1/2 in male Coverage Arc: Full/Part Circle Features: Low Angle Nozzles, PJ Precision Jet Tube Specifications: Precipitation Rate: 0.28 to 1.21 inches per hour (7 to 31 mm/h) Radius: 22 to 45 feet (6,7 to 13,7 m) Radius with Radius Reduction Screw: 18 feet (5,4 m) Pressure: 25 to 60 psi (1,7 to 4,1 Bars) Flow: 1.5 to 8.4 GPM (0,34 to 1,91 m3/h; 0,09 to 0,53 l/s) 1/2" (15/21) male threaded inlet nozzles. Standard trajectory angle nozzles: 06-red; 07-black; 08-blue; 10-yellow; 12-beige Nozzle outlet trajectory is 23° for 06, 07, 08, 10, and 12 nozzles Low angle (LA) nozzles: 07 LA-black; 10 LA-yellow LA nozzle outlet trajectory is 11°