Simpson Strong-Tie connectors make projects easier to build while making them stronger and safer. They are engineered and tested to perform and are manufactured to the highest quality standards. Make sturdy, good-looking projects that will last with the RTC Rigid Tie. This series secures two wood members to a vertical post forming a 90° corner. These connectors are ideal for the construction of workbenches and storage shelving units. RTC 18-Gauge ZMAX® Galvanized Rigid Tie® Corner for 2x (Pack of 1920).