The Kupo Slim Type Mighty Swivel Coupler is ideal for stage, event, theater, or studio use. Constructed from high-tensile aluminum extrusion, this heavy-duty coupler features a working load limit up to 264lbs (120kgs) and is designed to fit two kinds of tubes with diameters of 51-60mm (2in-2.36in) & 32-38mm (1.25in-1.5in). Perfect for quick and easy interconnection for truss, pipes or bars. Allows for a full 360 degrees of movement.