1、The alloy grinder has a double‑slot design, ultra‑fast chip removal, and it is not easy to block the lines when grinding and engraving. 2、The cemented carbide file has high hardness and good toughness. After rust‑proof treatment, it has a beautiful texture and is not easy to rust. 3、The file is made of hard tungsten steel bar, which has high rigidity and strong wear resistance, so that the service life of the tool is longer. 4、The product has a wide range of applications, and can be used for mold processing and manufacturing, mechanical chamfering, and cleaning of cast, forged, and welded flashes, etc. 5、If you encounter any problems in use, please contact us in time and we will solve it for you in time. 20 x Carving Burr Bits Item Type: Carving Burr BitsMaterial: Tungsten SteelProduct Size: D3 x 38mmProduct Quantity: 20pcsCogging Distribution: Double Bowl