Quality self-healing and reversible cutting mats, fully numbered and gridded on both sides (1⁄2", 1⁄8", 45° and 60° angle lines). Made from a unique, 3-ply long-lasting 2mm composite material with a non-glare surface. Designed for both rotary and straight utility blades, and will not dull blades. Find the perfect center on any project with zero centering lines.