Hi all. This is what I'm using.I can set a car/bus on them or an engine & trans. They are rated @ 1,000 lbs. each. I just bought 2 more this weekend {on sale} $39.99 USD for 2 pack. As I have both air&water cooled, I use them for both engine/trans dolly's.I cut to size needed , 3/4" ply, lay it...