Build a helicopter with working rotors and fly away with the K'NEX Helicopter Building Set! Use 62 Classic K'NEX rods and connectors to build a colorful classically designed helicopter for endless fun. This set can be combined with additional models (Plane and Truck) to build a space shuttle model for added fun! All K'NEX parts and pieces are guaranteed for a lifetime of fun and all K'NEX bricks, rods, and connectors proudly made in the USA. This set is perfect for builders ages 5 and up.