All-Metal 4-Cylinder Engine Model Kit for Adults & Teens, 325+PCS DIY Mechanical Building Model, 4+ Hours Assembly Fun, Educational STEM Project for Car Lovers & Hobbyists

All-Metal 4-Cylinder Engine Model Kit for Adults & Teens, 325+PCS DIY Mechanical Building Model, 4+ Hours Assembly Fun, Educational STEM Project for Car Lovers & Hobbyists

• Exquisite All-Metal Construction & Realistic Movement: Experience the satisfying weight and premium feel of a fully metal engine model. This kit features 325 precision-crafted parts made from high-quality aluminum alloy using CNC technology. After assembly, the mini engine model comes to life with a smooth, operational crankshaft, pistons, and fan, powered by a safe electric motor, offering a captivating display of mechanical principles in action
• Challenging & Immersive Assembly Process: Dive into a rewarding 4+ hour building journey with a 4.5-star difficulty rating. This DIY assembly kit meticulously replicates a professional assembly line process. Each of the 325 components is polished for a perfect fit, providing a profound sense of accomplishment and making it the perfect mechanical building model for adults seeking a focused, hands-on project
• Highly Detailed & Educational Mechanical Design: This isn't just a model; it's a lesson in engineering. The inline four-cylinder engine model is designed with extreme clarity, allowing you to observe the entire transmission process. It intuitively displays the core principles of how a real car engine works, making it a fascinating educational STEM project for anyone interested in mechanics and engineering
• Powerful & Long-Lasting Electric Motor: Forget messy fuels. This mini engine model is equipped with a modern, clean electric motor and a rechargeable 500MAH lithium bat-tery. It runs at full power for no less than 30 minutes, allowing for extended demonstration and play, ensuring your meticulously built creation can be showcased and enjoyed again and again
• The Perfect Desktop for Focus and Stress Relief: More than just a collectible, this all-metal engine model serves as a sophisticated fidget model for adults. The tactile assembly process and the satisfying, precise operation of the finished model provide a fantastic way to relieve anxiety, improve focus, and keep your hands busy, making it an ideal centerpiece for your office or home workshop