The Orbit 1/2-in. Male-Threaded Brass Impact Head lets you replace or add an impact head to your yards watering system. Even when used with dirty or reclaimed water from ponds and canals. Sprays up to a 90-foot diameter; making it ideal for large-area watering. 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 all-metal construction means it will hold up against the typical wear and tear that most impact sprinklers experience, giving you years of dependable use.