Mould King V8 Engine Building Blocks Sets, V8 Engine Model kit That Run, Build Your Own STEM Model Engine, 8-Cylinder Car Engine Building Engineering Toys for Kids/Adults Product Feature: Build Your Own Engine ModelThis is LSX454 Engine, which is V8 engine, arranged in a V-shape.It is the most popular technic engine for supercar enthusiasts and fans, which equipped with 8-cylinder 7.4-Liters(454 cubic inches)providing robust power output,enowned for high-flow cylinder heads, ensuring excellent performance even at high RPMs. Electrical Dynamic VersionWith 1*L motor and 1* battery box. (REQUIRES 6 AAA batteries, NOT INCLUDED). This V8 Engine Model Kit is electrically driven mode,which can be run after assembly. Its compact design can achieve high power output in a limited engine compartment. Authentic DetailsTransparent cylinder head design allows you to see directly through it how the valve train works together inside. You will see the precise piston movement, 4 delicate turbocharger and advanced exhaust system. STEM ToysIt is a wonderful activity together with family or friends. This model engine kit will promote your child's hand-eye coordination, divergent thinking,problem-solving skills,inspires creativity and brain development. Helps children learn collaboration and teamwork,It makes science, mechanical masterminding, and even movement empowerment from start to finish. Gift Box PackedThis construction toy with colorful cardboard packaging is a nice gift for construction on Birthday/Children's Day/Christmas/New Year, especially for kids, teens, adults ages 8, 9, 10, 12, 14 and up. All of my company's products have been strictly checked before shipment. However, in the unlikely event that you do find any missing pieces. Simply contact to us via email and we'll immidately sending you the missing parts for totally free ! Product Specification: Number of Pieces: 487 Item Dimensions: 6.06 x 4.41 x 5.39 inches You Get: 1 x Mould King V8 Engine Building Blocks Sets Before you place an order, please provide me with English information to facilitate our delivery and logistics