Features: Material: The mist system filter made of Brass, never rust. Best Choice for Outdoor Use with Could Water: Widely apply for landscaping, outdoor cooling system, greenhouse, humidification, spraying disinfectant, epidemic prevention, deodorant air purification, small fountain, etc. Leak-proof, self-sealing o-ring included with each nozzle, easy to install. 6Pcs Brass Misting Nozzles For Outdoor Cooling System, Greenhouse, Landscaping and Dust Control. Easy to install: this misting nozzle is very simple to operate, anyone can easily install it, just screw the nozzle easily into threaded nozzle opening and it can applied. Specifications: Material: Brass Width: Approx.10mm/ 0.39inch Package Includes: 6 Pieces/set Brass Misting Nozzles note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.