ITEM NAME:5pcs Tungsten steel 4 Flute End Mill CNC Milling Cutter HRC50 C3A8 5pcs Tungsten steel 4 Flute End Mill CNC Milling Cutter HRC50 C3A8 Material: Tungsten steel Color: photo color Cutting Diameter: 6mm Shank Diameter: 6mm Suitable For: die block steel, wrought iron, carbon steel, alloy steel, chisel tool steel, general iron material, etc. Made of Tungsten steel, high hardness, durable High abrasion resistance, long life use Brief outward, lively, unique, distinct. New