Micro Carbide Drill Bits (.004"–.295") | Choose Individual Sizes | PCB & CNC

These micro solid carbide drill bits are designed for precision drilling in CNC machines, PCB drilling equipment, and small drill presses. Originally developed for printed circuit board fabrication, they are ideal for drilling FR-4, G-10, plastics, composites, thin metals, and other precision materials where rigidity and accuracy are critical.

⚠️ All drill bits in this collection are sold individually by size — not as a set. Select your exact diameter and quantity on the product page.

Looking for a complete size range (drill sets)?
Save time with our pre-configured carbide drill sets available in common PCB, inch, and metric sizes.
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Precision Carbide Drill Features

  • Solid Carbide Construction
    Designed for drilling abrasive materials such as FR-4, G-10, phenolic, fiberglass, plastics, and composites. Significantly harder and longer-lasting than HSS.
  • 1/8" Shank (3.175 mm)
    Industry-standard shank size compatible with most CNC routers, high-speed spindles, drill presses, and PCB drilling machines.
  • 1.50" Overall Length
    Short-length design provides consistent tool stick-out and better drilling stability.
  • Depth Stop Rings
    Allow precise depth control and repeatable drilling in manual or semi-automatic setups.
  • Size-Specific Cutting Diameter
    All drills use a constant 1/8" shank; only the cutting diameter changes.

Looking for value-priced tooling? Browse our Value Tool Deals collection for lightly used routers, factory resharpened tools, and surplus carbide tooling offered at reduced prices.

Need to cross-reference number, inch, or metric sizes? View our micro carbide drill size chart.