Build your own powerful 4 cylinder engine with the Mould King 10087 construction toy set. This set includes all the necessary building blocks and instructions to assemble a working motor without the need for batteries. With a focus on detail and durability, this set is made from high-quality plastic and packaged in a sturdy box for safe storage. Featuring a construction theme, this set is suitable for children aged 8 and above, and is a great way to learn about the mechanics of engines and how they work. Made in China with the utmost care and attention to detail, this Mould King set is a must-have for any young engineer or construction enthusiast.