PRO'S CHOICE EASY MOUND BLOCKS Pro's Choice Easy Mound Packing Clay is a deep reddish brown packing clay that provides an easy-to-install, durable subsurface for pitchers' mounds and batters' box. Pro's Choice Easy Mound Packing Clay is comprised of a fine texture and turns into moist clay that's easy to form and shape, while retaining durability and firmness. Available in 4" x 8" x 2 1/2" pre-formed bricks. Ships on pallet of 38 bags, 8 bricks per bag