Ready For Blast Off! Build a space themed roller coaster! The K'NEX Amazin' 8 Coaster building set lets your creative builder make a real working roller coaster. This set comes with 448 parts - rods & connectors that snap together with a satisfying “click”, plus a coaster car and track. A motorized chain lift sends the coaster car screaming through twists and turns. Perfect for builders ages 7 and up, K'NEX supports key areas of a child's developmental growth, like fine motor skills, manual dexterity, and spatial relations, putting them on a path towards greater understanding of stem subjects. But they won't know that they're learning; they'll be having too much fun building their own mini working roller coaster! Easy-to-follow instructions are included for a frustration-free building experience. Requires 2 "AA" batteries, not included.