It can process various metals, including hardened steel, and nonmetals such as marble, jade, and bone, with processing hardness reaching up to HRC70. Simple, convenient, and reliable to use, it helps reduce labor intensity and improve the working environment. It can replace hand-held small grinding wheels in most applications and produces no dust pollution. Offers high production efficiency, significantly faster than filing and substantially more efficient than hand-held grinding wheels. Provides excellent processing quality with high surface smoothness, capable of shaping precision mold cavities of various profiles. Features long service life, significantly longer than high-speed steel cutters and much more durable than small grinding wheels.Name: Carbide Rotary File Set Quantity: 10 pcs/set Grain: Double grain Main Uses: Tungsten steel grinding head is widely used in machinery, aviation, automotive, shipbuilding, chemical industry, and craft carving applications, delivering effective results. Model: A-type cylindrical, C-type cylindrical ball head, D-type spherical, E-type elliptical, F-type arc round head, G-type arc tip, H-type torch, L-type conical round head, M-type conical tip, N-type inverted cone 10 types in total Color: Silver Material: Steel Size: 3x6mm Package Contents: 1 x Cutter Set Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.