5pcs M3-M8 Counterbore End Mill Pilot Milling Cutter Countersink Router Bit, 501 Original

5pcs HSS M3-M8 Counterbore End Mill Pilot Slotting Tools Milling Cutter Countersink Router Bits for Wood Metal DrillingFeature:Milling cutters are made of hard high-speed steel and are usually used for assembly on milling machines.Suitable for milling of copper, aluminum, steel, cast iron, etc.High toughness, wear resistance, high hardness for high-speed cutting.It can be processed directly or finely processed the heat treatment mold.It reduces the time to change tools, improves the moving efficiency of the machine actuator, and saves mold-making time.Specification:Material: HSS-AL super hard high speed steelHardness: HRC65-68°Size:M3 = 3.2 * 5.9 * 6 * 45mmM4 = 4.2 * 7.4 * 6 * 48mmM5 = 5.2 * 8.9 * 6 * 51mmM6 = 6.2 * 10.4 * 8 * 58mmM8 = 8.2 * 13.4 * 12 * 67mmDescription:The countersunk cutter is a specially manufactured tool mainly used to cut holes that allow bolts or screw heads to be screwed into.The cutting hole and bottom hole of this tool have high alignment accuracy. Because of its high production efficiency, it is often used in the machining industry.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2mm measuring deviation due to manual measurement.Package Content:5 X Countersink Drill Bits