This is called Ice Tower nozzle or Cedar nozzle. Fountain nozzle sprays can be used in a wide variety of ways to achieve spectacular effects. With beautiful shape and convenient installation, it can be adapted to a wide range of ponds and fountains. Easily installation, it only requires pvc tubing and a submergible water pump. The performance of all fountain spray heads is directly affected by the GHP pumped through the fountain nozzle head. For a higher and wider spray pattern in your pond, a higher GPH pump is required. It is universal for two sizes: 1/2" (Internal thread) & 3/4" (External thread). PACKAGE INCLUDES: 1 x New 1/2" & 3/4" Ice Tower Fountain Nozzle Spray Head