This misting nozzle does not need to use air compressed, can use liquid pressure to form a very fine mist, excellent misting effect, energy and water saving, low cost, good effect, no leakage. It is used a sturdy brass body orifice, widely used in dust removal, landscaping, cool down, artificial fog and other humidification place. The nozzle requires simple maintenance; soaking periodically in misting nozzle cleaner to remove mineral deposits that may accumulate with usage. Leak-proof, self-sealing o-ring included with each nozzle; no tape or sealant is required. This misting nozzle does not have a filtering device. Please make sure that there is no debris in the water when you use it. It will be better if filtering device can be installed at the water inlet pipe. This can avoid clogging. Specification: Material: Brass Thread size: 3/16 Orifice Diameter: 0.15mm / 0.01" Total Size: 9.5mm x 9mm / 0.37" x 0.35" (Max.D*H) Package Content: 5 x Misting Nozzles