I went to Harbor Freight last week and saw that they had so wheels and tires on sale. I bought the last 4 4.00 X 6 X 13" OD tires/wheels they had. I brought them home and since our daughter has Vickie's lawn trailer, I figured I'd make me one. I used 2"x2" x 1/8" angle for the frame and 2"x2"x 1/4" tubing for the walking beams. It has treated 1/2" plywood for the floor and the 16" high sides. It pulls great behind my golfcart, so I started trimming some of the 1000's of lombs that are to low now, and hauling them to the burn pile.