SPECIAL ORDER ITEM. Review Returns Policy before purchase. The XL Brass Coupling collection provides a robust and reliable solution for professional plumbing installations. Engineered for versatility, this coupling is specifically designed for use in PEX hot and cold water plumbing applications, ensuring consistent performance across various residential and commercial systems. The construction utilizes high-quality materials that are dezincification resistant, which helps maintain structural integrity and prevents degradation over time in demanding water environments. This component is built to meet rigorous industry standards, offering peace of mind for both installers and end-users.