Glasstile's Crystile Liner Series, L037 is a textured dark charcoal color 5/8"x12" glass pencil liner tile that is 8mm thick. While liner tiles may be easy to dismiss, they actually hold a very important role in making a tile project look cohesive and put-together. Liner tiles are able to "complete the look" of patchy tile work that may just need the appropriate texture, color, width, and finish of a liner tile! These tiles add the perfect accent and demonstrate your attention to detail. It may just be what a surface needs! Sold by the piece, these glossy liner tiles are hard-wearing and easy to clean. General installation questions or concerns can be addressed professionally to make your shopping experience easy and pain-free.