ITEM NAME:Type A HSS Combined Center Drills Double End Countersinks Drill Bit 3mm Description: Application: center hole shaft and other parts of the end face machining. Cutting light, good chip, high hardness, help protect the body's tissues are worn prolong life High strength, tight adhesion between the substrate and the coating. Use: Prefabricated pinpoint hole machining, guide twist drill hole machining, reduce errors. The role of the central hole and the structure: Center hole is positioned based on the top surface of the workpiece shaft installed. 60 one with 60 cone on top of the center hole compatible; small hole in the end, to ensure the cone with the top cone with the apt, and can store a small amount of oil. Specification: Material: HSS Size Chart: 1.5mm Shank Diameter: Approx. 4mm/0.16inch Length: Approx. 36.5mm/1.44inch 2mm Shank Diameter: Approx. 5mm/0.20inch Length: Approx. 41mm/1.61inch 3mm Shank Diameter: Approx. 8mm/0.31inch Length: Approx. 44.5mm/1.75inch 4mm Shank Diameter: Approx. 10mm/0.39inch Length: Approx. 57mm/2.24inch Package Includes: 1 Piece Type A Titanium Center Drill SKU: DMO0002616773020079.Material: HSS. High strength, tight adhesion between the substrate and the coating. Use: Prefabricated pinpoint hole machining, guide twist drill hole machining, reduce errors. The role of the central hole and the structure: Center hole is positioned based on the top surface of the workpiece shaft installed.
