FRKSMD-23/64" Drill Bit, Jobber Straight Shank M35 Cobalt 5% High-Speed Steel 135° Gold Finish for Stainless Steel Hard Metal - 6 Pack

PACKING LIST 6 packs of drill bits in 23/64"(9.13mm) cutting diameter, 80mm/3.15inch flute length, 123mm/4.84inch overall length, 135° split point tip.FEATURE The drills are made of M35 high speed steel with 4.50% to 5.50% cobalt content, which has excellent hardness, wear resistance, heat resistance and high c resistance, making it suitable for machining hard metals. The gold finish effectively improves corrosion resistance and extends the drill bits' life.APPLICATION The M35 drill bit is suitable for professional machining, particularly for drilling stainless steel. It is also suitable for processing high-hardness materials, including carbon steel, iron, aluminum, copper, plastic, wood, and more.NOTE Position the drill bit at 90° to the surface of the workpiece. For thick materials, drill in multiple passes to prevent overheating or breakage. For large holes, t with a guide hole. Use cutting fluid to improve efficiency, extend tool life, and reduce material damage.INSTRUCTION When machining different materials, the spindle speed and feed rate vary. Generally, the harder material, the lower the spindle speed and feed rate should be. For specific speed and feed rate recommend for common materials, please refer to the details provided on the product page.