
High Hardness Coated Drill Bit for Durable CNC Applications. High Hardness Coating: RM coating ensures durability for drilling 45 steel, 40CrP20, and stainless steel. Tungsten Steel Construction: Solid carbide material provides long-lasting durability and high efficiency. European Standard Design: NFZ standard 3D externally cooled design for precision CNC drilling. Versatile Material Compatibility: Suitable for stainless steel, high-hardness steel, alloy steel, and tool steel. Flexible Customization: Offers full, minor, and flexible customization from samples or designs. 100% Quality Inspection: Every finished product undergoes visual and function inspection before packing. Fast Lead Time: Peak and off-peak season lead time is within 15 workdays. Low MOQ: Minimum Order Quantity is only 1 piece for flexible purchasing.