Tiardey Stage lights truss clamps/hooks made of premium aluminum alloy 6061 material, safe and durable with adjustable knob fits on most fixtures. Fits tubing/truss or pipe: 2 inch/48-52mm in diameter, heavy duty clamps Max load capacity: 220lb / 100kg. Threaded bolt: 10mm, quick and easy to install or remove, completely wrap around truss for added security and stability. Suitable for moving head Beam Spot, LED Par light, LED effect light and other stage lighting fixtures. When you hung the Lighting on the truss, you must select the appropriate lighting accessory to secure it. Fortunately, this clamp is the solution for a tidier stage without gaff tape or hook-and-loop strips as well as prevents the lighting falling to the ground. It is an indispensable part of the stage lighting.