Hunter Sprinkler I4004SSHSR23 I-40 Stainless Steel Gear Driven High Speed Pop-Up Reclaimed Water ID Sprinkler with No.23 Nozzle, 4-Inch With the strength of stainless steel, the I-40 is built to last in the harshest sports, public park and commercial environments If efficiency, effective irrigation and beautiful results are the goal, the I-40 is the irrigation professional's best solution Hunter made its reputation on the quality and innovative features found in its rotary sprinklers