Interlocking Gears Toy Playset - DIY Bricks Electronic Building Gears Small Playgound 110 Pieces Build your own playground with this Interlocking Gears Play Set. Spin gears and play music with touch of a button. Supports STEM by introducing children to sorting, grouping, counting, designing, constructing, and putting physics into play with spinning gear movement. Boosts fine motor skills while promoting reasoning and problem solving as children create moving experiments with spinning, colorful action. Encourages child's creativity with multiple ways to build. Hours of fun for the entire family. Sticker Sheet included. Perfect for little builders ages 3 and older.