Buy COMOWARE Rotary Burr Set 10pcs 1/8 Tungsten Carbide Rotary File Solid Carbide Rotary Burr Set Drill Grinding Cutter Tools Bits Set, for DIY Carving, Metal Polishing, Engraving, Drilling

Grinders come in 10 different shapes that can be used for everything from grinding to drilling to welding to carving and more. The diameter of the Shank is 1/8″ (3mm.

Powerful strength, high efficiency, and high-quality finish make these tools last for a long time. They’re also packed in a nice plastic case for safe storage and protection. Tungsten Carbide is a material that has a high hardness and a long life.

Double groove because the lines cross is better for a low-density object. This is a great design.

It fits most small rotary tools, such as for woodworking drilling, carving and engraving. This makes it easier for DIY carvers to do their work. It’s also a great tool for moving things.

Cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum, and other materials can be used with this tool. It can also be used with other tools.

These were supposed to work on plastic, but I needed to get rid of some metal from a steel lock mortise. I bought these to work on plastic. Surprised to find that they ate the mild steel with ease and didn’t lose their sharpness. I’m going to try them on some hard steel next.

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