The Mega-Clamp is the world’s new standard theatrical lighting C-Clamp. The Mega-Clamp is created from high tensile, aircraft grade, extruded aluminum; so it’s both stronger and lighter than cast iron clamps. The Mega-Clamp’s safety factor far exceeds industry standards, breaking at over 2-1/2 tons at an independent testing laboratory. It is half the weight and twice as strong as most cast iron clamps. The Mega-Clamp fits from 1″ pipe to 2″ pipe sizes (1-1/4″ OD to 2.5″ inch OD tubes.) This means you can hang fixtures from a 2″ pipe without having to buy an expensive “Heavy Duty Clamp”. The Mega-Clamp fits the larger pipe standard.