Specialized Diamond Drill Bits – Burs, Step Bits & Specialty Drilling Tools

Professional specialized diamond drilling tools for lapidary, jewelry, glass art, and precision stone work. Includes diamond burs, step drill bits, countersink bits, flex-shaft bits, and other specialty drilling tools for applications where standard core or solid bits are not suitable.

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Specialty Bit Types

Related Tools

• Core Drill Bits
• Solid Drill Bits
• Drill Bit Sets
• Cutting Accessories

Frequently Asked Questions

• Q: What are diamond burs used for?
  A: Diamond burs are used for carving, engraving, shaping, and detail grinding on stone, glass, ceramic, and gemstone materials. They mount in flex-shaft handpieces, Dremel tools, or rotary tools.
• Q: Can I use specialized diamond bits in a standard drill?
  A: Most flex-shaft and twist bits are compatible with standard rotary tools and drill presses. Always use water cooling and match the bit shank size to your tool's collet or chuck.
• Q: What is a step drill bit used for in lapidary?
  A: A step drill bit drills progressively larger diameter holes in a single pass — useful for creating countersunk or stepped holes in thin stone slabs, glass panels, and ceramic tile without changing bits.