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Needle D's — 8mm (5/16") Diamond Tile Drill Bit

Experience the perfect blend of versatility, durability and precision! Get the job done fast and right with the Crowne 8mm Needle! This diamond bit, designed for impact and standard drills (1/4" hex), efficiently drills through hard materials without chipping.
  • Description
  • Use-Cases
  • Applications
  • Tech Specs

The Go-To Size for Everyday Installations.

 

The 8mm Needle D's Diamond Drill Bit hits the sweet spot for everyday tile installation—small enough for precision work, but sized for many common anchors, fixtures and accessories.

Built to drill through porcelain, ceramic, glass and stone, the diamond cutting edge delivers fast, controlled drilling while the 1/4" hex shank makes it easy to run with a compatible impact driver or standard drill.

CHUCK IT. DRILL IT. DONE.

BUILT FOR EVERYDAY TILE WORK

  • 8mm / 5/16" Diameter — A versatile size for common anchors, fixtures and installation work.

  • Diamond Cutting Edge — Designed to drill through hard tile and stone.

  • 1/4" Hex Shank — Quick-change compatible with impact drivers and standard drills.

  • Dry-Cut Capable — Convenient for quick installation holes without constant water cooling.

  • Wet Use Recommended — Water helps control heat and extend bit life.

  • Fast & Controlled — Made for clean, precise holes without the struggle of conventional drill bits.

GREAT FOR

  • Shower accessories

  • Towel bars

  • Shelving

  • Anchors and fasteners

  • Bathroom fixtures

  • Kitchen fixtures

  • Electrical penetrations

  • Small plumbing penetrations

  • General tile installation

MATERIALS

Designed for:

  • Porcelain tile

  • Ceramic tile

  • Glass tile

  • Granite

  • Marble

  • Natural stone

  • Engineered stone

TECH SPECS

  • Diameter: 8mm / approximately 5/16"

  • Shank: 1/4" hex

  • Cutting Edge: Diamond

  • Core: Steel

  • Cutting Method: Dry capable

  • Cooling: Water recommended for longer bit life

  • Tool Compatibility: Standard drills and compatible impact drivers

PRO TIP

Needle D's can be used dry, but diamond tools love water.

Adding water helps reduce heat and extend bit life, particularly when drilling hard porcelain or making multiple holes.

Needle D's™ — Little Bit. Big Bite.

Crowne Tools — For Pros. By Pros.

Installing various bathroom and kitchen fixtures.

 

Creating holes for medium-sized screws and anchors in tile and stone.

 

Drilling precise openings for electrical wiring or small pipes.

 

Enlarging existing holes for a perfect fit

Porcelain Tile

Ceramic Tile

Glass Tile

Natural Stone (Granite, Marble, etc.)

Engineered Stone (Quartz, etc.)

  • Diameter: 8mm (5/16 inch)
  • 1/4 Inch Hex Shank: Quick-change compatibility with impact drivers and standard drills.

  • 1/4 Inch Hex Shank: Quick-change compatibility with impact drivers and standard drills.
  • Tool Type: Drill Bit
  • Cutting Technology: Diamond Coated
  • Diamond Coating: High-grade diamond
  • Core Material: Steel
  • Fast and Efficient: Engineered for high-speed drilling.
  • Clean Cuts: Minimizes chipping and cracking.
  • Smooth Finish: Provides a professional finish.
  • Durable: Long-lasting performance.
  • Use with: Impact & Standard Drills
  • Maximum Speed: Optimized for high-speed drilling applications.
  • Cooling: Dry or Wet Use (water cooling recommended for extended life and harder materials)
  • Not Recommended for: Concrete, metal, or wood.
  • Disclaimer: Always wear appropriate safety glasses and protective gear when operating power tools.

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