Features:* .* Double skull-shaped cutters - Both the left and right cutting heads are threaded, and the handy handle can be mounted on both sides, with one handle and one cut. If 1 side is blunt, you can change the other side.* How to use-It should be installed on the platform for electric or pneumatic drills in the range of 1500-3000 rpm, which is stronger and more eaier than ordinary boring and saw tools.* Widely used-The application of aluminum end mills includes, but is not limited to: car bodies, corrugated materials, pipes, complex profiles, powder coating materials, Bakelite, plastic, fiberglass, thin metal. Specifications:* Material: ABS Plastic * Diameter: 17.5cm/6.88in * Main Color: Orange * Thickness Allowed for Cutting:Stainless Steel Plate: 1.2mm Common Steel Plate: 1.8mm Copper, Aluminum Plate: 2mm Plastic, Fiberboard: 2mm Operations:1. Fix the (cutting) plate on the operating platform with a minimum distance of 15 between the site and the platform.2. Mount the tool with an electric drill or any electric drill by attaching the drill chuck.3. Operate the tool while the motor is running.4. Release the cutting bit when the motor is running.5. Use special bit cooling oil during operation.6. See the picture below for more information when the tool is mounted on the drill. Package Contents: 1 x Double Cutting Knife1 x WrenchNote: 1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.