This is a die for a card case, business card holder, and wallet. This is a die for a high-quality card case. It's very convenient as cards can be stored on both sides. It seems like it could be used for business. Ideally, a press machine would be best, but if you don't have one, you can also punch it out by tapping. When tapping, it's better to use a rubber mallet or a mallet. Place the leather on top of the die and tap it with a rubber mallet or wooden mallet. The blade is sharp, so please be careful not to touch the blade.