This Track Ball Slide Puzzle with Rolling Ball offers young children a hands-on way to explore cause and effect as they guide a small ball through a winding track. Each box contains 20 pieces, with the puzzle crafted from durable materials for repeated play. Designed for children aged 3 to 6 years, it helps develop fine motor skills and hand-eye coordination through simple sliding and tilting actions. The compact size measures 41 by 8 by 1 centimeters, making it easy to store or carry. Sold wholesale by the box.