This all-inclusive do-it-yourself puzzle comes with a set of high-quality, sustainably-sourced plywood boards with 97 precision-cut parts and instructions to help you every step of the way. No tools or glue required. Using just a rubber band, the all-wheel drive motor can be activated, allowing the tractor to move on a flat surface Size: 7.9 x 3.4 x 5.4 in