Unique 3D mechanical puzzle, laser-cut Ply Wood material, no tonx, environmentally friendly, smooth wooden board. All parts are pre-cut, no glue required, making working and moving even more exciting. Mechanical Miracle Coming to Life from your hand What a fascinating thing to see the mechanical miracle of your own hands. It is so amazing to see the mechanical self-propelled movement. Bring people back to mechanical age and let children know more about mechanics and science. Self-propelled wooden puzzle High-quality model kits that need your patience more to assemble them. But the detailed instructions in English with fairly simple picture will help you a lot. And no battery or other power is required, self-powered, but you need to use a little wax and the included tool to move it smoothly. More Focus and Patience for Things Kit is beautifully designed, the pieces are well cut, and it works when together, but it is a little difficult to put together. Don't rush and force nothing. Be patient and focus when you assemble these pieces. It will highlight your patience and attention. And you could paint it as you want after finishing it. A great project for a family. Creative and Welcome Gift This Mechaanical series presents unique and different, creative gift for your friend, husband, dad, son or grandson, who is model builder or puzzle lover. It looks so cool and creates a proper challenge for an adult. The best choice for someone who loves craft hobbies. Product description Style Name: Air Vehicle The Mechanical Series is very interesting way reliably to keep your best memoirs and warm feelings. Let you back to Mechanical age and more patient and focus on something. Interesting gift and entertainment for these people who is into puzzle building and enjoys challenges. Make much fun to assemble and paint The pieces are pre-cut and come on flat wooden sheets that are about 1/4 inch thick. You will not have any trouble pop the individual pieces out of sheets. The English instruction is clear with detailed illusions and easy to follow. You could also paint it as you like, of course, its still very cool just as it is. It also needs a bit of fine tuning on the tooth picks to run smooth. What you only need is patience to assemble and complete it. " Detail Specifications: Product size: 37 x 12 x 17 cm. Package size: 35.7 x 23.5 x 4.6 cm. Assembly time: Approximately 5 hours. Recommended age: 8 and over. Safe and non-toxic. Kids toys, desk model display, pretty decoration. Product Safety This product is subject to specific safety warnings Warning: Not suitable for children under 3 years. For use under adult supervision