Come and see our amazing products. It consists of three different coloured wooden balls.The light-weight wooden ball moves slowly enough for the child to follow and track the ball as it moves gradually from left to right.The child learns to grasp and he is able to place the ball in the tracker.This item provides them with the visual concept of reading and writing from left to right. Pls confirm further with us if any query about packing info, inventory status and time schedule.