SharkBite 1/2" Male Sweat x 1/2" CF Brass PEX Adapter is crafted from lead- DZR brass, providing a durable and reliable connection solution for PEX tubing. This adapter an easy-to-install and cost-effective method to connect PEX tubing using either a stainless steel clamp system or a copper crimp ring system, both sold separately. Designed for versatility, it features FNPT threading on the opposite end, making it suitable for various plumbing needs. The SharkBite PEX Barb fittings are for potable water distribution and hydronic heating applications, meeting standards such as ASTM F1807, NSF/ANSI 61, and NSF 372. This adapter ensures a secure and efficient connection, i for both professional plumbers and DIY enthusiasts.