√FEATURE:-This drill bit set includes sizes from 1mm to 13mm are made of M2 high-speed steel material, it has high hardness and wear resistance, suitable for processing medium-high hardness materials; It is the best all-rounder, offering the optimal balance of versatility, cost-effectiveness, and performance. With a hardness of HRC 63 and a red-hardness of 600°C, it is the preferred choice for machining carbon/alloy steels and aluminum, covering 90% of conventional scenarios from DIY to general industry.√APPLICATION:The drills kit are suitable for high-hardness metals, such as steel, alloy cast iron, stainless steel, iron, copper, aluminum alloy, and cast iron. They are also effective in plastics and wood.√PACKING LIST: This 13-piece drill bit set includes sizes from 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13√NOTE:When machining different materials, the spindle speed and feed rate vary.Generally, the harder the material, the lower the spindle speed and feed rate need to be. Position the twist drill at 90° to the workpiece.For thick materials, drill in multiple passes to prevent overheating or breakage.For large holes, start with a guide hole.Use cutting fluid to improve efficiency, extend tool life, and reduce material damage.For specific speed and feed rates recommended for common materials, please refer to the details provided on the product page.
