Metal nibblerThis double head nibbler cutter used on 2m/m rigid plastic plate and 1m/m aluminum sheet without problem. Min. Cutting radius: 12mm. The sharp edge of the shank should be perpendicular to the workpiece when cutting to prevent shank breakage. When a cut becomes dull, you can change the other end to continue cutting. Excellent cutting effectDrilling speed range: 1500 - 3000 rpm. This metal snack tongs are corrosion resistant, strong and very durable. High quality sheet metal cutters make many cutting tasks easier, faster and safer without burrs, edges and sparks. Allow Cutting ThicknessIt can cut sheet metal 2mm or less ( including steel plates, copper plates, aluminum plates, stainless steel plates) with two heads. When equipped with a thin plate hole opener, this product can drill standard holes from 55mm to 260mm. Practical DesignWhen cutting a standard arc, use a thin plate hole to ensure that the circular cutting surface is smooth and beautiful, first drill a 3mm positioning eye, then drill a 12mm hole to insert the cutter head into the hole. Cut inner and outer circles. Meet Different DemandsWith this knife, you can cut straight line, curved line, arc line or many other irregular lines and shapes.< /p>