The 1-1/4 in barb x 3/4 in barb brass coupling is our large diameter fitting that offers contractors labor savings and flexibility, ideal for commercial or residential projects. The fitting provides speedy installation with PEX systems eliminating the need for soldering, heating, or specialty tools. The lead-free eco-brass construction delivers dependability and peace of mind for building owners. High-temp and freeze-resistant materials allows for adaptation to hot and cold water applications.