Hot Air Stirling Engine Motor Model DIY Unassembled Steam Metal Flying Saucer Features: DIY unassembled Stirling model kit, enhance hands-on ability, experience the fun of assembly. The size after assembly is 12x9x13cm/4.7x3.5x5.1in. Made of high quality metal, enabling the model sturdy and durable. Metallic texture and unique flying saucer appearance make it an eye-catching desktop decor. Fuel is anhydrous ethanol or 95% medical alcohol. Ignite after filling the fuel, wait for the water to boil, then gently push the flying saucer, it will start to rotate. Water needs to be added to the flying saucer to produce steam to make the it rotate, very easy to operate. Mute design, give you a comfortable environment and don't disturb others. A fantastic gift for kids' science project, Physical/mechanical learning, teacher?s Demo props on the class, inspiring children's interest in science and physics learning. Specifications: Material: Metal Model Size: 12 * 9 * 13cm/ 4.7 * 3.5 * 5.1in(Assembled) Package Size: 17.5 * 12 * 5.5cm/ 6.9 * 4.7 * 2.2in(Unassembled) Package Weight: 441g/ 15.6oz Note: 1. The fuel needs to use anhydrous ethanol or 95% medical alcohol. 2. The flying saucer needs water to produce steam to make it rotate. 3. The package does not contain alcohol. You are required to purchase by yourself. Please understand the inconvenience. Packing List: 1 * Stirling Engine Model Kit 1 * Assembly Instructions Contact us We can be contacted at any time through messages if you have any questions, comments or product requests. We will respond to you within 24 hours and do our best to help you out! We encourage our customers to contact us with any questions or concerns! We'd like to be sure you are completely satisfied with your purchase. Payment We accept payments via any method that permits. Payment must be received within 7 business days of auction closing. We ship to your or PayPal address. Please make sure your address is correct before you pay. If you have any issue with your address let us know before you purchase. Shipping We ship to your address. Please make sure your is correct before you pay. If you have any issue with your address let us know before you purchase. Items will be shipped ASAP after we receive the payment. Delivery time depends on destination and other factors. Policies We are not responsible for any custom duty or import tax. Please contact us if you are not satisfied with the item after receive it. Serious Buyer Only! Please place bid only if you agree with all the terms. If you have any problems or concerns whatever with your order or products, please message us and give us a chance to assist you before you leave any feedback. We believe we can produce a positive outcome to any situation and will work hard to earn your praise.