This is a die for a coin case, pouch, wallet, and round zipper small item holder. You can make a cute coin case. Ideally, you would use a press machine, but if you don't have one, you can also cut it by hitting it. When hitting, it's better to use a rubber mallet or a mallet. Place the leather on top of the die and hit it with a rubber mallet or wooden mallet. The blade is sharp, so be careful not to touch the blade.