Feature: 1. WIDE APPLICATIONS: People bought it for kids' science project, physics or mechanics learning, demonstration on class, etc. 2. PERFECT IN WORKMANSHIP: This engine model is also a well designed and crafted mechanical toy suitable for people of all ages from all works of life. 3. WORKING MODEL WITH EXCELLENT TECHNIQUE: Made of high quality aluminum material, durable and safe enough to use for a long time. 4. GREAT GIFT FOR EVERYONE: With visual texture and aesthetic appearance, it's simply a piece of art. Our customers are satisfied with its strongly stable structure and exquisite body. 5. VIVID MODEL: Displaying basic principle of external combustion engines. Can be used as a teaching tool to demonstrate mechanical or physical knowledge. Specification: Item Type: Engine Model Material: Aluminum Color: As shown in the picture Product Size: Approx. 15x8.3cm / 5.9x3.3in Weight: Approx. 451g / 15.9oz Application: It's a well designed and crafted mechanical toy, great to display basic principle of external combustion engines, . Package List: 1 x Engine Model1 x Ethanol Bottle(Without Liquid)3 x Hex Wrench1 x Wick1 x Instruction Manual Note: 1. During the whole heating process, do not touch the cylinder and heating part with your hands (high temperature danger!).2. Avoid contact with other liquids on the cylinder to prevent the gas from being red and rusty, just turn off the alcohol lamp at the end of the demonstration.3. The ethanol bottle does not contain liquid.