Quantity: one set Color: silver Minimum cutting radius: 12 mm Maximum cutting thickness: Iron sheet: 1.8 mm Stainless steel plate: 1.2 mm Aluminum foil, copper: 2 mm Plastic/Fibreboard: 2mm Note: Consider the maximum cutting thickness for different sheets. Excellent cutting results without burrs or edges, you can use it to cut straight lines, curves, arcs or many others irregular lines and shapes Maximum cutting capacity: iron sheet: 1.8mm, stainless steel: 1.2 mm, copper/aluminum sheet: 2 mm, plastic/fibreboard: 2 mm Ergonomic handle, comfortable to use, 360 adjustable, cutting speed 1500 ~ 3000 rpm. Double head design allows you to continue cutting with the other when one head becomes dull Suitable for automobile maintenance and sheet metal production Instruct: 1. The cutting edge should be oiled frequently, especially when cutting aluminum plates. 2. First turn on the electric drill, then cut; After finishing cutting, first remove the biting device from the metal plate, then turn off the electric drill. 3. When cutting, the shaft should be perpendicular to the surface of the plate to avoid sharp edges. Good quality product