3/8" Solid Carbide Drill Bits, 1Pcs Carbide Drill Bit Set with Blue Nano Coating, Metal Drill Bit Set for Hardened Steel Cast Iron Alloy Copper, High Precision CNC Drilling Tool Preferred Choice

Using ultrafine particle tungsten steel base material, it has higher wear resistance and strength, and is an exclusive drill bit for high hardness and high-speed cutting applications, which improves work efficiency.

• Precision Flat Bottom Design: These flat bottom drill bits are engineered for high-precision machining, delivering clean, flat-bottomed holes with smooth finishes. HOYUSK drill bits for hardened steel perfect for applications requiring exact depth control and minimal post-processing. Specialized in difficult drilling applications: hole enlargement, irregular/off-axis holes, angled drilling, and slope surface operations
• Blue Nano Coating & Tungsten Steel Material: Featuring a blue nano coating and crafted from ultra-fine 0.6um micro-grain tungsten steel, these small drill bits offer exceptional wear resistance, strength, and heat dissipation. Perfect for high-speed cutting and machining of hard materials up to 65 HRC, reducing tool changes and improving machine efficiency
• Sharp & Durable Cutting Edges: Fully ground cutting edges ensure sharp, precise drilling with no burrs. Our metal drill bits feature an advanced spiral flute design that ensures efficient chip removal, minimizes heat buildup, and extends the tool's lifespan
• Versatile Application: HOYUSK’s carbide drill bits suitable for drilling steel, stainless steel, aluminum, hardened materials, and more. Compatible with CNC machining centers, engraving machines, and other high-speed milling equipment. Not recommended for use with hand drills
• Secure & Stable Clamping: The straight shank design with a non-slip tail ensures a tight grip in the chuck, preventing slippage during operation. This design enhances stability and accuracy, making it ideal for high-speed machining tasks