knife can cut sheet metal, including sheet steel, copper, aluminum and stainless steel, for both flat and curved surfaces The double head design allows you to continue cutting with the other edge when one side is dull With this cutter, you will be able to cut a straight line, a curved line, an arc line or a many other irregular lines and shapes It is suitable for cutting metals (iron, aluminum, stainless steel, copper, etc.) smaller than 2 mm. Both ends can be used. The cutter head can be rotated and positioned 360 degrees, and various irregular patterns can be cut. Widely used in industry and sheet metal Double-head design allows you to keep cutting with the other cutting edge when one side is dull Instruction: 1. The cutting edge should be oiled frequently, especially when using it to cut sheet metal aluminum inium. 2. Turn on the electric drill first, then cut, and after cutting, move first cut the sheet metal, then stop the electric drill. 3. During cutting, keep the cutting rod vertical to the sheet metal surface, in case a cutting edge breaks. Package includes: 1 Set x Metal Sheet Cutter Kit Pay attention to the maximum cutting thickness of different metal sheets, please. Please note that the new type and old type of this product will be sent randomly, and make sure you dont mind before ordering.