SharkBite 3/8 in. PEX X 3/8 in. D PEX Coupling

The SharkBite PEX Barb Polybutylene Adapter is made of a lead-free DZR brass and is an easy to install, low-cost solution to connect PEX tubing to Polybutylene pipe. SharkBite PEX Barb fittings are compatible for potable water distribution and hydronic heating applications. This product includes 2 color coordinated crimp rings �?the included BLACK crimp ring is intended for PEX while the copper-colored crimp ring is for use on Polybutylene pipe.