[No glue needed] Unique mechanical 3D puzzle, laser cutting plywood, non-toxic, environment-friendly, smooth wood. All parts are pre cut and do not require glue. [Detailed English description] Making this mechanical model toy requires not only attention, but also patience. Assemble the whole IQ toy device with your own hands, making you proud. [Perfect decoration] Exquisite woodcarving around the main body. The gorgeous and beautiful base of the Ferris wheel looks very perfect. The decorative design of 3D wooden puzzle looks very attractive in the finished product. Size: 24 * 21 * 32.5cm (after assembly)