
Aiticrn Coating Tungsten Steel Drill Bit HRC52 External Cooling Solid Carbide Drill D4.3*36*L74*D6*2t (NHB043). High-Performance Coating: Solid carbide substrate with high-performance coating technology to improve production efficiency. Enhanced Edge Strength: Unique edge treatment technology strengthens edge strength, wear resistance, and stability. Wide Application Range: Suitable for mold industry, semiconductor, medical, alloy steel, tool steel, cast iron, and carbon steel. High Precision CNC Tools: Designed for high-speed and high-precision processing needs in various CNC equipment. Professional R&D Team: Independent R&D team with application technology center for product innovation and plugin expansion. Strict Quality Control: ERP-connected warehouse management with full inspection for size and appearance to prevent defects. Certified Quality: Products certified with ISO9001 and SGS, tested with Zoller equipment for high precision.