***We are out of 1/4" (6mm) plywood there is a global shortage. All grids will be 4mm thick. We will not take returns due to thickness since you have been notified*** This is a engraved Wolf Pendulum Board made out of Maple plywood. These are made to order, you can choose between approximately 4, 6, 8, 10, and 12 inches in diameter and 1/4" thick. You may choose between natural wood or painted black. This can be used with a pendulum (pendulum not included) for divination purposes.