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. 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.