LING'S SHOP Brass Column Fireworks Water Fountain Nozzle Sprinkler Spray Head Pond (3/4") This nozzle is a kind of porous scattering nozzle. Fountain nozzle sprays create beautiful visual effects for ponds and water gardens of all sizes. EASY INSTALLATION, it only requires pvc tubing and a submergible water pump. Two Size:Internal Thread:1/2" DN15 and Size:Internal Thread:3/4" DN20 1pc