"Material:Plastic;Color:Transparent Also can use pin product the calendar, cultivating children innovative and hands-on ability.Some children may require adult assistance when navigating the activities. Fixed for product of drawing, calligraphy and painting, usually as a temporary fixed. Easy to use,easy to dismantle Ideal for identifying key points on maps etc. Can be used on the cork board, cardboard, leather and other items. Sturdy reliable pins for safe, easy use. It is forbidden to give kids who are still little as a toy. Packaging: 30pcs/box Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. "