Looking at couple of corner clamps. I seldom work with anything over 2" square tube so I'm leaning toward the Bessey or Wilton below. Jaw height on both is 1-3/8" - is that adequate for 2" tube? Any reason to chose one brand over the other? The Bessey is made in Germany if you believe the picture.
Wilton
Bessey
Wilton
Bessey