K&rsquo;NEX &ndash; Turbo Jet &ndash; 2-in-1 Building Set &ndash; 402 Pieces &ndash; Ages 7+ &ndash; Engineering Educational Toy OVER 400 ASSORTED PIECES  The KNEX Turbo Jet 2-in-1 Building Set contains 402 parts and pieces that feature vibrant colors and premium-quality construction. The package includes KNEX rods, connectors, and motorized moving parts like wheels, helicopter rotors, and more! Packaging may vary. INCLUDES A BATTERY-POWERED MOTOR  Let your kids see their jet planes come to life! Each building set includes a battery-powered motor to operate the turbo jet plane and heli-plane. Introduce your kids to the art of building their own creations with this exciting playset! The motor requires two AA batteries. DOWNLOADABLE INSTRUCTIONS  The KNEX Turbo Jet 2-in-1 Building Set has downloadable, step-by-step building instructions for two motorized models. Each STEAM toy is designed for a fun and exciting playtime. TWO MOTORIZED MODELS  Build and customize a supersonic jet plane and a cool heli-plane with rotating propellers using this sets 402 pieces. Guaranteed for a lifetime of fun, all K'NEX rods and connectors are proudly made in the U.S.A. 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. DEVELOPMENTAL 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! COMMITMENT TO QUALITY: KNEX rods and connectors are responsibly made in America at a landfill-free, zero-waste green manufacturing facility in Hatfield, Pennsylvania. We test to the strictest quality and safety standards, ensuring that your child has a successful, trouble-free building experience. 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.