0.15-1Mm Micro Drill Bits 3.175Mm Shank Carbide For Print Circuit Board 10Pcs

√FEATURE:Micro drill bit crafted from ultra-hard 92% Tungsten Carbide (WC) with 8% Cobalt (Co) binderExceptional Hardness (HRA 89-95) – 3× longer life than HSSUnmatched Wear Resistance - for stainless steel & hardened alloysHigh-Temperature Stability - Maintains cutting edge at 800°C+Precision-Ground Flutes - Optimized chip evacuation & reduced heat buildupAn uncoated (Bright) surface - reduces friction resistance during cuttingThe 135-degree tip angle - provides excellent processing stability√APPLICATION:Tungsten carbide twist drill bit set excel in precision applications: PCB micro-drilling (0.15-3mm holes), device components, aerospace turbine cooling holes, maintaining micron-level accuracy in demanding industrial environments.The drills 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:√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.Use cutting fluid to improve efficiency, extend tool life, and reduce material damage.For specific speed and feed rates recommended for common materials