Greets Tim,
Sorry about the delay; I’ve been busy trying to escort a little love into the new year. So, Happy New Year, 2021 to all our RV Buds and Budettes!
I’m not at the shop, but I can tell you that these are the puny dollies and may be in the range of 10”or 12”-ish by maybe 14”-ish. Too large, and the pant would contact the table and re-start round three of the cage fight.
Now iffin’ you really wanted to be king of this hill, you could just grab some casters - preferably urethane locking ones, and fit them up to the right sized plywood blank and I would immediately be outclassed; which is not a foreign place for me. And you could share it when you are done, with the next guy or gal ready to itch fiberglass in bed at night. Of course, there goes the project timing again into the weeds as we again become distracted by options to do things better than necessary. Harbor Freight. Seven bucks.
Let me know if you need me to measure them.
M1