The 4 in. Flexible Mist Nozzle Extension has a 10/24 Nozzle Thread that can be used place of a standard Mist Nozzle. There are two features that make the 4 in. Extension so beneficial; first, it extends the mist spray another four in. the mist line, and second, the wire memory allows the user to direct the mist wherever needed. This is especially useful on fixed fitting mist systems such the DIY PVC mist system. The extension features a Brass and Stainless Steel Mist that only uses one half gallon per hour per nozzle, making it the most water nozzle available. efficient Nozzle