Thank you for looking. Flower size: Approximately 10mm This is a 4-petal flower-shaped punch die. Ideally, you would use a press machine, but if you don't have one, you can also punch it by striking it. When striking, it is best to use a rubber mallet. Place the leather on top of the punch die and strike it with a rubber mallet or wooden mallet. The cutting edge is sharp, so please be careful not to touch it.