The 90-degree elbow features a solder cup, female NPT threads and mounting ears. The fitting provides a means of changing the pipeline direction 90 degrees and adapting from a solder connection to a threaded connection. The ears allow the fitting to be secured to a wall support using a nail or screw. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. 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 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.