Plumbers and DIYers, this 5-pack of brass Pex-A expansion fittings is perfect for connecting 3/4\ Pex-A tubing to standard 3/4\ female NPT threads. They're made for use with expansion tools (F1960 system) and provide a reliable, leak-free connection for your water supply lines. Brand new from Efield, these fittings are essential for modern Pex plumbing installations in homes, RVs, or commercial projects. Having a 5-pack means you've got spares for multiple connections or future repairs. Made in China but built to standard specifications. Make your Pex projects easier with these quality adapters.