These cylinders have hexagonal bases that keep them from rolling off the counter if they fall over.
I was surprised to find that glass beads serve as feet on the bottom of the bases. This reduces the contact footprint and might reduce mess in the case that I have a spill from another source.
My set withstood several acids and solvents with no staining. Scrubbing with a test tube brush hasn't scratched anything. In the short time since I've bought them, they've been moved around quite a bit and held up fine.
The glass didn't strike me as especially thick or thin... just normal.
Each cylinder was wrapped and put in it's own box, all three of which were fit into another larger box.