The Orbit 1/2-in. Male-Threaded Plastic Impact Head is an exceptional value and lets you replace or add an impact head to your yard’s watering system. Designed for dependability, impact heads have an uninterrupted water flow and are clog-resistant, even when used with dirty or reclaimed water from ponds and canals. Sprays up to a 90-ft. diameter, making it ideal for large-area watering. Easily adjust the coverage from a partial section to a full circle. Features a deflector shield for distance adjustment, and an anti-backsplash arm to aid in spray pattern and area coverage. A simple twist of the diffuser screw breaks up the water stream, creating larger or smaller water droplets. The lightweight, plastic construction is high-impact resistant and durable, providing years of reliable watering use.