The flush bushing features a male solder end and solder cup. These fittings provide a means of reducing the size of a line. 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 years limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, Nibco is the preferred brand in the industry.