I think your right, George. The one on the left says 1/2" and the one on the right says 3/4". I had a piece of EMT about 3 feet long in the garage and it fits in the one on the left, but is way too small for the one on the right. They must be strictly for rigid.

BTW: I tried bending the EMT with the springy one and kinked the h*ll out of it!!! [Linked Image]

Ryan Jackson,
Salt Lake City