Klutz Air Power Book Kit The book and science kit in one delivers rocket-propelled fun with four easy-to-assemble vehicles-race a sturdy cardstock hot rod across the floor glide Ages 8 and up; A hovercraft over the dining table take flight with a helicopter and blast off with an only from Klutz balloon powered rocket Author: Pat Murphy A hovercraft over the dining table take flight with a helicopter and blast off with an only from Klutz balloon powered rocket