This design is 3/8" wide, making the connection point of the tab much narrower than larger designs; this connection point on the butterfuly is smaller than other mini dies, making it easier to damage. Take great care in making sure that you open the die evenly, without pushing it to one side or the other. This will cause it to become misaligned, causing damage to your die when it's used. If the metal gets stuck in the die, hold the die in your hand, and tap the design portion of the die with a rawhide or plastic mallet. These mini dies work best with 20 to 16-gauge fully hard metal.