It is a Carbide End Mill/Milling Cutters/Drill Bits/2-Flute V Engraving Bit. Product Type: 2 flutes straight grooves cone metal engraving bit. Material: solid carbide. Cutting Angle: 30 degree. mainly used for the engraving and marking of stainless steel, aluminum, brass, medium density fiberboard, wood panels, plastic and many other soft gummy materials.