Techno Bloc 13" x 19.5" x 2 3/8" Blu 60 HD² Smooth Slab Grayed Nickel, this contemporary patio stone is a best-selling option for contemporary backyards. Blu Smooth patio stones are available in a multi-piece system for pool decks, walkways & backyards. Available in different dimensions to allow for creativity in paving patterns, the Blu 60 collection is one of Techo-Bloc's most renowned and popular collections. Its smooth texture is perfect for any modern landscape design. Choose from a large collection of colors for your pedestrian only areas such as on walkways, poolside and patios. Check out the HD2 smooth texture for the tightest/ pore less surface. A paver version is also available.