It is a CNC Tools/Carbide Router Bits/Engraving Cutters/Flat nose Engraving Tool Bit/CNC Mill Bits. Product Type: Flat nose engraving tool bit .Shape: V-Shape. Material: Tungsten carbide. Application: Used to engrave and mark a wide variety of materials: Aluminum, Steels, Plastic, Brass, Stainless, Tool Steels, Anodized and other Plated Parts, Wood, Brozne, Plastics, PVC, PCB, MDF, Acrylic, and many others.