This custom-made dolly can make mobile most anything large and heavy. It is brutally heavy itself, yet rolls and steers super easily on the all-steel casters. The frame is 27"x54", 1/8" thick x 1.5" angle iron, and the cross members are slightly less thick and wide, 7" O.C. The top is 3/4" Grade A plywood. Please CALL Bob at 40six-43nine-five668, leave a message, and I will return your call promptly. To discourage scammers, I WILL NOT RESPOND TO TEXTS OR EMAILS. Thank you!