Transform your construction, HVAC, or set design projects with these versatile metal frame connectors designed for 1-inch square tubing. These professional-grade connectors eliminate the need for welding equipment while delivering sturdy, reliable joints for custom metal frames. The comprehensive set includes various connector types - corner joints, T-connectors, and base plates - all featuring secure set screws for solid connections. Made with durable materials, these connectors work seamlessly with stainless steel, aluminum, or standard steel square tubing (tubing sold separately). Perfect for creating custom storage solutions, display fixtures, workbenches, or theatrical set pieces. The modular design allows for quick assembly and modification, making these connectors ideal for both permanent installations and temporary structures. Each connector is precisely engineered to ensure square, stable connections while maintaining a clean, professional appearance. Save time and resources on your next project with these practical, easy-to-use frame building solutions.