The 12 in straight x 1/2 in barb x 1/2 in nominal copper fitting provides a one tool solution and eases installation for contractors, making it ideal for residential and commercial projects. The end spun closed allows for system testing before valves or other fittings are installed. The 25-year warranty is proven to last the lifetime of the building. The high-temp and freeze-resistant material allows the fitting to adapt to hot and cold water applications.