【Build Your Own Engine Model】 This W16 engine is Tight-Fitted V8 Engine, which is 2*V8 engine combination that arranged in a W-shape. The W16 engine is the most popular technic engine for supercar enthusiasts and fans, which equipped with 16-cylinder 8-Liter 4-turbochargers, delivers tremendous power output. 【Electrical Dynamic Version】With 1*L motor and 1* battery box. This W16 Tight-Fitted 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. 【Gear Speed Shift System】This 10201 mould king engine equipped with gear speed shift system, Four speeds can be adjusted by moving the gear lever. How the simulated piston motion and turbocharger! They provide you with a captivating, lifelike experience. 【STEM Toys】It 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 Packed】This 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 !
