The Discovery Kids DIY Toy Model Engine Kit will encourage young boys and girls to expand their creativity, think logically, and even refine their motor skills all at once. Deliver the action of a classic car engine thanks to the powerful pistons and interactive cables! Simply plug the cables to the battery pack distributor and watch the engine fans turn around. Your child will have a great time constructing this comprehensive model engine toy! Tinker with the cranks, pulleys, belts, and exhaust valves to make this little gadget come to life right in front of their eyes. Product Dimensions - L 25 x B 25 x H 5 cm