New Graystone color! Great for Dungeons & Dragons, Pathfinder, and other combat miniature or role-playing games. Graystone features a "subtle" 1" grid pattern with various accents such as broken tiles, blood stains, standing water, moss, etc. to further enhance your story. Each piece is 10" square with 1" grid, interlock with our 5" tiles. Compatible with dry-erase, wet-erase, and liquid chalk markers. Constructed of strong chipboard approx. 1/8" (3.8mm) thick. Set of 9 weighs about 3 pounds.