These sturdy plastic molds are strong enough to make at least 25 stepping stones with careful handling. Simply grease the molds, fill with a basic mortar mix or cement and let set for 24 hours. Paints and coloring can be added to customize your stones or you can leave them in their natural concrete color. Complete instructions are included with each mold. This mold makes a quarter round pattern forming in one corner. Four of these stones form a circle, making it an attractive focal point to place a bird bath, bench or patio set. ?18" X 18" X 2"