... BallsItem NoDPZ002MaterialEco-friendly ABS materialPieces inside6 color small balls, 4 balls per color, 24 in total, diameter 3cm ... for kids reference)Brief Introduction: 1. Structure Smart Balls is a kind of perfect assembling and inserting toy ... 2. This product has 38 plastic sticks and 24 color balls(orange, purple, red, yellow, blue, green). 3 ... , size, shape,material educational toy learning machine