These sturdy plastic molds are strong enough to make at least 25 stepping stones with careful handling. Simply grease the molds and fill with a basic mortar mix or cement you can find at your local hardware store. Paints and coloring can be added to customize your stones or you can leave them in their natural concrete color. Sixty pounds of mortar mix usually makes approximately 5 stones and takes only 24 hours to set. Complete instructions are included with each mold. A hexagon shaped stone with a twining grapevine design. 12" X 13".