The misting nozzles are made of brass with stainless steel orifice, anti-rust, , leak-proof, the mister nozzle is for outdoor use with cold water WIDE USAGE: The misting nozzles is widely applied to outdoor cooling system, agriculture irrigation system, green house, disinfection, epidemic prevention, deodorizing air purification, landscaping, small fountain, etc EASY TO INSTALL: The brass misting nozzles are easy to install, which can be easily screw into any 10/24 UNC threaded mist nozzle opening DIMENSION: Thread size is UNC 10-24 Orifice diameter is 0.4mm colour:Brass Material:copper Package Contents: 30 * Misting Nozzles Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.