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. STEM Learning Fun! 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. New Mini Scale Car & Track! The track and coaster car in this set may look a little bit different than what you're used to - they've been miniaturized! The brand new mini scale lets you build awesome K'NEX thrill rides and keep them on display anywhere.