Light Source Mega-Quick Disconnect - Fixture Quick Release Assembly
Details
The Mega-Quick Disconnect permits up to a 250 pound fixture to be pulled for transport or service and replaced in exactly the same location and orientation.
The slide fastens to the lighting fixture. The Mega-Quick Disconnect body fastens to a Mega-Claw or Mega-Coupler. The clamp is fastened to the pipe or truss.
The slide is inserted into the Mega-Quick Disconnect body until it “clicks” into place.
One end of the knurled ended bar is fully pulled up, and then the other is simultaneously pulled up to release the slide from the Mega-Quick Disconnect body.
Remove the slide by pushing or pulling the fixture and slide until it is released.
Working Load Limit: 250 Pounds
Light Source Mega-Quick Disconnect - Fixture Quick Release Assembly (Light Source FQRA) 
Service was great! Got a response to my question within 24 hours (next business day).
Customer support assisted me with a quest about rated amperage and this being a tax exempt purchase. Very helpful.
checkout was messy - shipping pricy...