529 ASSORTED PIECES The KNEX Power and Play Motorized Building Set contains 529 parts, including different sizes of connectors, rods, and wheels. These can be clicked together easily for a myriad of 3D configurations.\nMOTOR INCLUDED The KNEX Power and Play Motorized Building Set is the only set on the market that includes a motor. Watch your childs creations come to life when you attach the battery-powered motor to them!\nSUITCASE STYLE PACKAGING Fuel your childs curiosity and let him look for inspiration everywhere by bringing this building set along on family trips! The handy, reusable box allows hassle-free carrying of this educational toy.\nSTEP-BY-STEP GUIDE Let your little ones creative juices flow with this Power and Play Building Set. It comes with easy-to-follow instructions that will teach your child to create models such as racecars and aircraft.\nSTEAMagination 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\n\nAges: 7+