BUILD IT: Build a working roller coaster in a new miniaturized scale and awesome shark-themed graphics! BLAST IT: The new battery-powered, high-speed blaster motor shoots the coaster car screaming through twists and turns, past the sharks and back to safety! STEM LEARNING FUN: Building with K'NEX helps strengthen fine motor skills, manual dexterity, and spatial awareness; putting them on a path towards a greater understanding of STEM subjects. Chomp! Dont get caught by the sharks! The KNEX shark attack roller coaster building set lets your creative builder make a real working roller coaster with cool shark-themed graphics in a brand new miniaturized scale! The set includes 170 parts, including Micro KNEX rods and connectors that snap together with a satisfying click, plus a coaster car and track. A brand new battery-powered high-speed blaster motor sends the coaster car screaming through twists and turns, past ferocious sharks and back to safety. Perfect for builders ages 7 and up, KNEX supports key areas of a childs developmental growth, like fine motor skills, manual dexterity, and spatial awareness, putting them on a path towards greater understanding of stem subjects. But they wont know that theyre learning; theyll be having too much fun building their own mini working roller coaster! Easy-to-follow instructions are included for a frustration-free building experience. Suitable 7+ years