Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Battery and Motor, Collectible Set for Adults, Construction Toys for Kids Children Product Feature: Classic Inline-Four Engine Scale ModelMould King L4 Engine set contains many realistic details. Such as simulate piston motion, Simulates valve and ignition system. Designed specifically for race car fans. The perfect gift for car lovers and future engineers! ELECTRIC DRIVEThis product is powered by the equipped battery and reproduces the dynamic principle for you 1:1. Mould King toy building block adopts a heavy duty motor that can deliver powerful power and rechargeable lithium-ion batterie that provide the best run time. Premium Quality MaterialMould King Engine Kits made from child-friendly ABS materials and tested for quality control to ensure compliance with child safety standards. No smell, no burr, smooth and eco-friendly. You can assemble with confidence and safety. MOC L4 EngineMould King L4 Engine building block kits is assembled from 1787 building block parts and has colorful paper instructions to help you easily assemble it. This building block kit compatible with mainstream building blocks. All parts are easy to assemble and will not fall apart. STEM Engine ToyMould King building sets are the best for kids to recreate scenes from the dream up their own original stories. And it is a good collection. For any occasion such as New Years Day, Christmas, Birthday, Easter, Halloween. Product Specification: Product Dimensions: 12.83 x 7.87 x 9.21 inches Item Weight: 4.36 pounds You Get: 1 x Mould King L4 Engine Building Blocks Sets Before you place an order, please provide me with English information to facilitate our delivery and logistics