The Brass and Stainless Steel Mist Nozzle is the most water conservative and efficient mist nozzle available today. It only uses one half gallon per hour per nozzle and features sturdy brass and stainless steel construction. The nozzle design is also unique, engineered to form a perfect 24 in. cone pattern that facilitates rapid evaporation and the best possible cooling possible. The nozzle requires simple maintenance; wiping periodically or soaking to remove mineral deposits may accumulate with usage. The 10/24 Thread is the industry standard.