Three pieces of 3/4" 7 ply birch plywood that can be fastened to the underside of the Indoor Shot Put / Weight Throw Circle (shown) to provide the athlete with a smooth, hard surface inside the circle. There is no actual image of this item. The image shown is representative only. The actual item will be the plywood surface ONLY. Please Note: This item CANNOT ship to P.O. Boxes, APO, or FPO Addresses. It CAN ONLY ship to a Street Address.