It is a Drill Bit/2 Flutes Square Nose End Mill/Milling Cutters/CNC Router Bits. Product Type: solid carbide square nose coating end mill. Material: tungsten carbide. mainly suitable for milling materials from soft Plastics to tough Aerospace Alloys including Aluminum, Stainless Steel, Mold and Alloy Steels, Inconel, Hastelloy and Titanium.