Set includes a battery-powered motor that gives life to the KNEX pieces. Requires 2 AA batteries not included. Set comes with an easy-to-follow instruction manual. Ideal for kids 9 and up. Manufacturered by K'NEX. STEAMagination Its the connection of STEAM (science technology engineering arts & math) with a childs curiosity and creativity. It powers the fun of each KNEX set. Broken Part? missing Part? call us at 1-800-kid-knex. Wed be happy to help! packaging may vary. Set comes with 568 classic K'NEX pieces to build your very own coaster.