Gastrick,
I think they're 3/8" or a little over that. I'll measure them tomorrow. My buddy has a kool welding table & we're gonna make the stands for them next week.
Bonehead,
We're gonna make stands outta 1 1/4" steel tubing. Three will be open underneath & 2 will have shelves underneath. Can't wait to mount all my goodies on them.
Well... my buddy that got me these steel tops helped me build the 1st stand for my work benches. I was his gopher & he did the real work! We're gonna make 5... 3 with shelves underneath & 2 with no shelf like this one... for larger storage.