K&rsquo;NEX Thrill Rides &ndash; Infinite Journey Roller Coaster Building Set &ndash; 347 Pieces &ndash; Ages 7+ &ndash; Engineering Educational Toy Includes 353 K'NEX parts and pieces Slingshot launcher All K'NEX Rods & Connectors made in the USA OVER 340 ASSORTED AND COLOFUL PIECES  The K'NEX Infinite Journey Roller Coaster Building Set includes 347 colorful parts that are made from premium quality materials. It also comes with a coaster car, rods, and connectors that can be clicked together in a multitude of 3D configurations to create KNEX structures that are totally unique. ENGAGING AND EDUCATIONAL  This building set is a perfect opportunity to hone your childs creativity, logical thinking, and hands-on skills. With the increasing risk of kids being engrossed in smartphones and tablets, this toy set is something that theyll enjoy and also learn from. This set is ideal for children ages 7 and up. NO BATTERIES NEEDED  Build your own roller coaster and operate it anytime and anywhere. You dont have to worry about running low on batteries, since this building set doesnt need any. The coaster car is powered by a slingshot launching mechanism that your child can play with and enjoy for a long time. STEP-BY-STEP INSTRUCTIONS  This engineering educational toy includes easy-to-follow instructions to guide your child through the whole building process. It also includes cautions in building and a complete list of specific parts, so youll be able to find out if any are missing. 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. Packaging may vary. 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.