Proline brings the timeless look of slate to decorative concrete with the classic Ashlar Stone pattern — a design that dates back to the 12th century and remains a staple in Western architecture. Our New England Slate texture adds rich, natural detail to any surface. This 3-piece stamp set features color-coded mats for easy pattern variation, designed to fit tightly together for a balanced, professional finish. Each stamp measures 24″ x 24″ and is built for heavy-duty performance.