Somewhere I do. It's 4'x8'. Fits in a long box. Used a sheet of plywood for the floor. The frame or box is all angle iron and a couple flat braces on bottom or side. Used like plastic gardening fencing and zap strapped it to angle iron. Best route is stronger axles. You can get mountain bike tires with a 3/4" hole to accept an axle. We just welded nuts and screwed bike tires into. Is fine until load gets heavy enough.