GBGS 8 Pack O-Clamp 2 Inch Lighting Mount for Stage Lighting Moving Head Light Par Light Spotlight Aluminum Alloy Finish Heavy Duty 220 Pound Heavy duty aluminum alloy material stage light hook clamp. Load Capacity: 100kg / 220lb. 10mm diameter aperture Quick and easy to attach, remove or re-position of your light Completely wrap around truss for added security and stability Tubing Diameter 48-51mm. Fits truss F34 and pipe 2 inch in diameter Note: 50 years warranty