Build four brilliant balloon-powered racers in Air Power. Children can have rocket-propelled fun with these easy-to-assemble creations, including a hovercraft and an original Klutz balloon-powered rocket! The book comes with every part needed to make the racers work; including five balloons, straws, wheels, axles, two mouths pieces and stickers! Everything is explained with clear building instructions and understandable scientific explanations. Perfect for budding engineers! WHAT YOU GET one hot rod body and engine block eight wheels foam wheel nuts four axles one hovercraft cockpit body one thrust vent one sticker sheet rocket find and tube helicopter assembly blade jumbo straw plastic cap two plastic mouthpieces three big balloons two small balloons What is Klutz? Klutz is a premium brand of book-based activity kits, designed to inspire creativity in every child. Our unique combination of crystal-clear instructions, custom tools and materials and hearty helpings of humour is 100% guaranteed to kick-start creativity. Super-clear instructions Open-ended creativity Rewarding reading Skills to build on Everything you need