The 3 Way Corner Connector for 1" square metal tubing builds solid three-dimensional corner joints fast — no welding, no fabrication shop required. Essential for contractors, HVAC technicians, electricians, and manufacturers assembling box frames, equipment enclosures, and structural cubes on site. Rostek can supply the steel tubing cut to your exact specifications — receive your connectors and pre-cut steel together and build immediately on site. Custom B2B kits available for contractors, manufacturers, and farm operations. 

• Fits 1" square metal tubing 
• Buy 4 or more and save 20%
• B2B and bulk orders welcome 
• Custom kits available — connectors + pre-cut steel delivered together 
• Steel cut-to-size — call 888-249-8065 
• No welding required — assembles with included set screws 
• Ideal for equipment enclosures, box frames, structural cubes, and 3D on-site builds