I built these for a guy a few yrs back . .. .  needed to be heavy duty for abuse.
These are higher, so when you work on something, you don't bend over. He was taller then me, so a couple 2 ichs higher then I'd be comfortable with.
I'd also change out the shelf and either lower it or raise it. There isn't enough room underneath for 5 gal pails.
I'd likely raise it and make it a row of drawers and then have the shelf be about 4 - 6 inchs off the floor.
The legs are glued and screwed 2x4 or 2x6 . .  I don't recall the other dementions. We used 2x10's for the top. It's very soild and at the time, cheap.

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