Half the weight and twice as strong as most cast-iron clamps.
The Mega Clamp is created from high-tensile, aircraft-grade, extruded aluminum, so it's both stronger and lighter than cast-iron clamps by The Light Source. The Mega Clamp's safety factor far exceeds industry standards, finally breaking at over 2-1/2 tons at an independent testing laboratory.
First introduced in 1993, this solid one-piece clamp body is designed to grip pipe with it's micro grooves, and will not "rock" when making adjustments to the light fixture. The Belleville spring washer has 600 pounds of spring load when compressed. This spring pressure keeps the fixture from drifting after making small pan adjustments to the light fixture. Just grab the fixture by the top of the yoke and twist to pan the fixture. Usually, you will not need to pull out your wrench to tighten the pan bolt, the fixture will stay securely held. The Mega-Clamp fits from 1" pipe to 2" pipe sizes (1-1/4" OD to 2.375" inch OD tubes). This means you can hang fixtures from a 2" pipe without having to buy a special, expensive, heavy-duty clamp. The Mega-Clamp fits the larger pipe standard.