GBGS 20 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, 10mm diameter aperture Quick and easy to attach, remove or re-position of your light Completely wrap around truss for added security and stability Load Capacity: 100kg / 220lb Tubing Diameter 48-51mm. Fits truss F34 and pipe 2 inch in diameter