USAGE Easily and accurately punches a 1.6mm hole in silver, copper and other soft sheet metals . The angled tip creates a smooth, clean hole without rough edges. Ideal for most craft, hobby, DIY project, jewelry making jobs. DIMENSION Punch pin is 1.6mm in diameter and will create 1.6mm round holes. Along with the high quality plier comes an extra replacement pin as gift. There are a total of 2 pins. DESIGN The ergonomically designed PVC handles for anti-slip and comfort grip. The PVC material is not only lightweight but also heatproof. A semi-internal spring action reduces hand and wrist fatigue for easy one-handed operation. MATERIAL Drop forged high carbon steel and heat treated for strength and durability, additional black oxide finishing improves the corrosion resistance of the surface and effectively prolongs service life of the plier. The antirust oil may be appeared on the tools, it will not effect the function.