Let your passion for building take to the air for incredible adventures on the Technology Science & Play rescue Helicopter. A new incredible kit with over 250 components to build a motorised helicopter and 20 other models and technical applications. Lots of components including a worm screw, universal joint, planet gear carrier, gear wheels, blades and rotors, to approach the world of mechanics in a simple and fun way. Suitable for ages 8 and up.!!