The Nibco 601 11/4 1-1/4" Nom C Copper Coupling Without Stop is a high-quality plumbing fitting designed for use with copper pipes. This straight coupling features a cup connection on both sides and is suitable for use in various applications such as potable water, gases, and air systems. With a maximum operating temperature of 400 degrees Fahrenheit and a maximum operating pressure of 439 psi at 100 degrees Fahrenheit, this fitting ensures durability and reliability in a range of plumbing systems. Made in the US by the trusted brand NIBCO, this 2-piece coupling is a essential component for any plumbing project.