- 3D wooden model kit with marble run and crank-activated mechanism. - Made from laser-cut, non-toxic, burr-free plywood. - No glue required for assembly. - Includes 253 pieces and transparent acrylic stand. - Assembled size: 32.5 x 21.4 x 22.8 cm. - Structure features tower distributors, spiral ramps, wheel lifts, and slides. - Estimated assembly time: 7 hours; requires patience and attention to detail. - Illustrated instructions in English and spare parts included. - Support for missing or damaged parts for two years. - Creative and decorative gift, ideal for adults and young puzzle enthusiasts. - Perfect for birthdays, Epiphany, or as unique decoration.