Specifications: Min. Cutting Radius: 12mm Maximum Cutting Thickness: Iron Sheet: 1.8mm Stainless Steel Sheet: 1.2mm Copper, Aluminum Sheet: 2mm Plastic/Fiberboard: 2mm Features: 1. This metal cutter can cut sheet metal including steel, copper, aluminum, and stainless steel sheet metal, for both flat and curved surfaces 2. Double head design of sheet metal cutter allow you to continue cutting with the other cutting edge when one side is dull 3. With this sheet metal nibbler, you will be able to cut out straight lines, curve lines, arc line,s or many other irregular lines and shapes 4. The nibbler metal cutter can be used on 8mm 1500~3000RPM electric drills or pneumatic drills 5. The metal nibbler edge direction is adjustable in 360 degrees Package Includes: 1 set x Metal Sheet Cutter Kit