Plan and build your own vehicle like a true engineer with this mechanical model that's loaded with incredible details. This impressive model kit includes easy-to-follow instructions with illustrations to assemble the 485-individual laser-cut wood parts. Designed with gears and rubber-bands, you can wind up your Big Rig and watch it go! All parts move as well and watch the engine pistons go up and down! Pieces are made from eco-friendly wood and are assembled without glue. Wood. 14 1/2"L x 7 1/2"W x 2"H. Intended for the adult collector, not for children.