The Vulcan 31 - 0.5" fountain nozzle creates a dramatic, eye-catching vertical spray that enhances water displays, creating a high impact visual effect. The water spray is 3-4 feet high and 4-5 feet in diameter when powered by a 3000-5000lph fountain pump. Visual impact can be enhanced by illuminating the spray with submersible LED lights after sun down. The nozzle is made of bronze to last a long time, to name a few of its characteristics: 1. Thick material, anti-corrosion and anti-rust 2. Easy to clean and prevents scratch corrosion 3. Easy to adjust and control the spraying flow