0.75" plywood platform with plywood support braces on each end. Carpet covering protects load. All now include a riveted 39" pull strap with a 4" looped handle that can be fastened underneath with a Velcro fastener to eliminate dragging and accidents when stored or not required. Carpet colour may vary. Dim.:32"x20" . 4" casters. Capacity 1,000LBS