I just got a CNC 6040 Router/Mill and was looking for a workbench for it that is strong, mobile, and not too big. This bench was nearly perfect except that I wanted the work surface to be 40" from the ground. I bought the bench, which is excellent, and printed four spacers to raise the tool up by 2 inches. Perfect.

https://www.amazon.com/Titan-Distributors-Inc-Replaceable-Locking/dp/B07MWXLJ51