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 creates a regular square pattern of 5 rows of 3 1/2" squares. We suggest these molds be placed on a smooth, even ground on top of small gravel and sand base. Sand can be rubbed into the edges around the stones to help secure the stones in place. 18" X 18" X 2"