K'NEX Thrill Rides &ndash; Electric Inferno Roller Coaster Building Set &ndash; 639 Pieces &ndash; For Ages 9+ Engineering Education Toy ENDLESS BUILDING POSSIBILITIES  Let your children experience limitless building possibilities with this unique building system from KNEX! The Electric Inferno Roller Coaster Building Set comes with 639 different parts and pieces, including a motor and chain lift with a coaster car, which can be clicked together in an assembly of 3D configurations. REAL MOVING PARTS  Unlike other building toys, KNEX allows your kids to create big models that actually move! Kids can create interactive toys using the classic pieces of this set, making different variations of motorized, moving roller coasters that stand up to 2.7 feet tall. CONVENIENT STORAGE  This activity will definitely keep your children occupied for hours! Storing all the pieces of this set will never be a hassle! All pieces can be put away in the large plastic tub for ease of access and storage. Packaging may vary. EASY TO USE  Easy-to-follow, step-by-step building instructions are included with the whole package of the KNEX Thrill Rides Electric Inferno Roller Coaster Building Set. Unleash your kids creativity as they make their own designs for open-ended fun! This building set is recommended for kids ages 9 and up. STEAMagination: Its the connection of STEAM (science, technology, engineering, arts & math) with a childs natural curiosity and creativity and it powers the fun of each and every KNEX building set. Building with KNEX puts children on a path towards a fundamental understanding of STEAM/STEM subjects. THRILL OF THE BUILD: KNEX Thrill Rides allows each child to build bigger models that move to create an amusement park right in their home! Using the included parts and pieces, each KNEX Thrill Rides building set you can build a massive roller coaster, a majestic spinning Ferris Wheel and more  the heart pounding fun is only limited by your imagination. DEVELOPMENT BENEFITS: KNEX supports key areas of a childs developmental growth. As they click the different parts together and discover how the building system works, theyre strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness and exercising their imagination! PARTS GUARANTEE: Broken part? Missing part? If you find yourself in need of a replacement for any reason, just give us a call! Well get you what you need so that your child can get back to building as soon as possible.