"The pliers punch holes in soft sheet metal (copper, gold-filled, sterling silver, and brass) up to 22 gauge. They create a smooth, clean hole without barbs or rough edges. Plus, with the gauge guard, the area around the hole will be free of unsightly indentations! Choose from 3 different hole punches: 1.25mm, 1.5mm, or 1.8mm. • Ideal for cold connections & creating pendants • Creates a smooth hole with no rough edges or dents in sheet • Extra-long jaws for extended reach • One bonus replacement pin included!""