The repair coupling features solder cups and no stop. The fitting provides a means to connect/repair two lengths of tube. In addition to its inherent qualities of beauty, durability and low maintenance, copper's reusability makes it an ideal application in sustainable projects. Nibco® copper fittings are manufactured in an ISO 9001 certified facility and backed by a 50 year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, Nibco® is the preferred brand in the industry.