Artistic Pavers® Steplock® SLGSPANT16 16" x 16" Stonelock™ Paver Antiqued Graystone 1-5/8" Thickness. Stonelock™ Pavers have the rustic look and textures of an uneven natural stone and have all the benefits of sand-set interlocking pavers. All our products, including Stonelock™ Pavers, are installed easily and quickly on a sand base. The natural beauty of Stonelock™ pavers add the earthly look of stones, and a smooth touch of class to your deck. You can expect a slight variation in Stonelock's shades which simply adds to the natural appearance of each piece and creates a rich ambiance throughout your landscape.