This fits your. this is one model of educational rotary building block. the gears can be coupling with each other no matter it is battery- operated or manual operation. arbitrarily assemble thousands of shapes, cultivate the coordination of your baby's hands,eyes and brain working together,arouse your baby's infinite room for imagination while practice its logic thinking ability.Let your baby take lead in the changeable assembling game at any time and anywhere and create more new shapes.
BEST LIFETIME GUARANTEE: If for whatever reason, you don't absolutely love your HenMerry Product , just return it, and we'll refund every penny (or replace it, if there is a problem).
HenMerry Childrens 81 PCS Rotating Gear Electric Building Blocks Set Colorful Shapes Puzzle DIY Puzzle Electric Toys for Children Kids Boys Girls B078JPQYQ