This is a die for a smartphone case, a mobile phone case, and a waist bag. Hole size for belt: 0.6cm wide, 3.8cm high. Ideally, a press machine is best, but you can also punch it out by tapping if you don't have one. When tapping, it's better to use a rubber hammer or mallet. Place the leather on top of the die and tap with a rubber hammer or wooden mallet. The blade is sharp, so be careful not to touch it.