Discovery 4-cylinder engine model kit TK010 - Children's assembly kit

Learn about the workings of a motor engine by assembling a 4-cylinder engine with 103 parts. The assembled engine model realistically reproduces valves and spark plugs. It's a realistic toy that allows you to observe the piston turning the crankshaft. The main body is transparent, so you can see how it functions according to engineering principles. Introducing the new educational toy series, 'Discovery#MINDBLOWN', where you can touch, play, and learn! Requires 2 AA alkaline batteries (not included)