MFL 660lb Duty Stage Light Clamp C223 Aluminum Lighting Truss Clamp for DJ Lighting (Pack of 4) TUV Rheinland certified stage lighting clamps safe to use. Heavy duty aluminum alloy stage clamps for long lasting durability;Load Capacity: 300kg /660lb. 38-51mm/1.5-2 inch diameter Quick and easy to attach these global truss clamps, remove or re-position of your light with ease. Completely wrap around the truss for extra security and stability. Suitable for security lights, stage lights, and most party lights