Description: 【Fine Craftsmanship】: This model of a 4-stroke internal combustion engine is meticulously crafted, ensuring quality and durability. 【Material】: Made from stainless steel, this diesel engine model toy is strong and rustproof, promising long term use. 【Product Dimensions】: With dimensions of 11cmx17cmx30cm, this model is compact yet detailed, making it easy to handle and understand. 【Educational Tool】: Ideal for middle school physics experiments, this model serves as a nice teaching instrument to demonstrate the principles of a gasoline engine. 【Practical Demonstration】: The 4-stroke internal combustion engine model provides a clear and practical demonstration of how such engines work, enhancing understanding through visual learning.   Specification: Material: Stainless Steel Size Chart: 11cmx17cmx30cm/4.33inchx6.69inchx11.81inch Package Includes: 1 Set Engine Model Toy Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitors and light effect,the actual color of the item might be slightly different from the color showed on the pictures.