Tubing Elbows: Create a stylish railing system with our wide selection of tubing elbows and railing connectors. This tubing elbow provides a flush mount look to your brass railing. Made of 100% solid brass this connector has a tarnish-resistant powder coated RSF finish which is maintenance-FREE and protects up to 20 times longer than regular lacquers. Sold individually, fits tubing size 1 1/2 in. diameter.