Thank you for looking. This is a rotating! Colorful duty roster [3 divisions]. It has a split pin in the center and rotates. How about using it for kindergarten or nursery school duty activities or group activities? The mechanism is easy to understand at a glance and is easy for children to grasp. Children can also move it easily. It is made with a diameter of approximately 18 cm. We also accept changes in color and size, so please let us know in the comment section. (The price may change.) We strive to create high-quality products, but please understand that this is a handmade item. Thank you.