This is a cork board for leathercraft. It is used when piercing leather with a leather chisel by placing the cork board underneath. You can use it to mark holes with a diamond chisel, and then make holes with a leather chisel. Using the cork board prevents the tip of the chisel from being damaged when it goes through the leather. Also, please use it as a noise reduction measure for diamond chisels. Size: 100 x 70 x 30mm