SUBSTIWOOD® Pool copings add beauty to your pool. Each coping is 2 feet long. Large copings (medium line) are approximately 12 inches wide and small copings (trim line) are 8 inches wide. Call us for all your pool coping needs. We make different size copings in straight and curved alignments as well as corner units. Two types of 90-degree corner units are available: a sharp corner and a 6-in radius corner. For color choices, see color page. Contact us with your custom needs.