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Drill Bits Unlimited – Carbide Drill Basics

  • Solid Carbide Construction
    Engineered for high-precision drilling in abrasive materials such as FR-4, G-10, and phenolic, while also being suitable for plastics, wood, composites, and non-ferrous metals when proper feeds, speeds, and handling are used. Significantly harder and longer-lasting than HSS.
  • 1/8" Shank (3.175 mm)
    Industry-standard size compatible with most PCB drill presses, CNC spindles, rotary tools, and depth-stop systems.
  • 1.50" Overall Length
    Standard precision length providing consistent tool stick-out and predictable depth control.
  • Depth Stop Rings (When Included)
    Allow precise control of drilling depth and repeatability in manual and semi-automatic setups.
  • Size-Specific Cutting Diameter
    Shank size remains constant — only the cutting diameter changes between tools.
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