Role 4 Initiative Dry Erase 10 inch Dungeon Tiles - Pack of 9 Great for Dungeons & Dragons, Pathfinder, and other combat miniature or role-playing games Double-sided Dry-Erase Surface with 2 interlocking positions on each side Each piece is 10" square with 1" grid, compatible with our 5" tiles Constructed of strong chipboard approx. 1/8" (3.8mm) thick. Set of 9 weighs about 3 pounds.