Rigid Rigging Point

While working on my last project I became aware of a new rigging component that I have not used before!

You can find it at: http://www.thelightsource.com/products/50/view

It has a safe vertical working load of 1100 pounds. While it doesn't allow for vertical adjustment in the same manner that a chain would, yet I can think of a variety of situations where it would be very useful.