1. This product is made of tungsten steel, and the diameter of the shank is 3mm (0.11in).
2. It is suitable for the processing of metals such as cast iron, cast steel, alloy steel, carbon steel, stainless steel, copper, and aluminum, as well as the processing of non-metals such as stone and wood.
3. The product is packaged in a plastic box, which is convenient for storage. There are 10 grinding heads inside. Grinding heads of different shapes have different uses, making it convenient for your use, such as engraving, polishing, grinding, etc.
4.Please add enough water and use eye protection during using.
5. The rotation speed should be controlled within 6,000 - 40,000 revolutions per minute. Excessively high machine rotation speed may cause damage to the drill bit.