FREE SHIPPING on orders OVER $249 (T&Cs apply)

Needle D's — 6mm (1/4") Diamond Tile Drill Bit

Conquer delicate drilling with the 6mm Needle D's! This precision diamond bit, featuring a 1/4" hex shank for impact drivers and drills, delivers flawless, chip-free holes in tile, mosaics, and other brittle materials. Perfect for intricate detail work and small fixture installations.
  • Description
  • Use-Cases
  • Applications
  • Tech Specs

Small Hole. Serious Bite.

 

The 6mm Needle D's Diamond Drill Bit is built for fast, precise drilling through porcelain, ceramic, glass and stone using a standard drill or impact driver.

Its compact 6mm diameter is ideal for anchors, small fixtures and detailed installation work where accuracy matters.

The 1/4" hex shank makes it quick to chuck up and get to work, while the diamond cutting edge handles the hard materials conventional drill bits weren't made for.

SMALL BIT. CLEAN HOLES. GET IT DONE.

BUILT FOR PRECISION

  • 6mm / 1/4" Diameter — Ideal for smaller anchors, fasteners and detailed installation work.

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

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

  • Dry-Cut Capable — Make quick holes without requiring constant water cooling.

  • Wet Use Recommended — Water helps reduce heat and extend bit life, especially in hard porcelain.

  • Compact & Controlled — The smaller diameter is ideal when accuracy matters.

GREAT FOR

  • Small anchors and fasteners

  • Shower accessories

  • Towel bars

  • Glass shelves

  • Small fixtures

  • Mosaic installations

  • Pilot holes

  • Detailed tile work

MATERIALS

Designed for:

  • Porcelain tile

  • Ceramic tile

  • Glass tile

  • Mosaic tile

  • Granite

  • Marble

  • Natural stone

TECH SPECS

  • Diameter: 6mm / approximately 1/4"

  • 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

  • Not Recommended For: Concrete, metal or wood

PRO TIP

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

Adding water helps control heat and can extend the life of the bit, especially when drilling hard porcelain or making multiple holes.

Needle D's — Small Bit. Serious Bite.

Crowne Tools — For Pros. By Pros.

Creating pilot holes for larger fasteners in tile and stone.

 

Drilling precise holes for intricate mosaic tile designs.

 

Installing small glass shelves or fixtures.

 

Making small, clean holes in mirrors or glass for decorative purposes.

 

Detailed work on stone or tile countertops.

Porcelain Tile

Ceramic Tile

Glass Tile

Mosaic Tiles

Natural Stone (Granite, Marble, etc.)

  • Diameter: 6mm (1/4 inch)
  • 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; on average 35+ hole per bit
  • Use with: Impact Drivers & 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.
  • 5 stars: 21 (84%)
  • 4 stars: 0 (0%)
  • 3 stars: 3 (12%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (4%)
Some of the reviews shown are from related products the merchant grouped with this one.
C
Cortez Brown
This thing eats like butter

This thing eats like butter. Great bit

V
Vasyl Fursyk
Very good

I like

J
Jeff brush
One issue

It'd be great if I could get the core out of the drill bit. Gets jammed up and I cant drill anymore holes with it.

M
Marius M.
Great tool

Will buy again

D
Dustin Y.
Bad mama jamma!

I actually used this bad mama jamma today, installing grab bars in the shower I just finished. Drilled 6 holes in porcelain tile with no issues!

C
Christopher

Better than Milwaukee

R
Ronald L.
nice bit

fast drilling

J
Jocelyn

Don’t try again

J
John S.
Amazing little bits

I love these bits. They last twice as long as other brands and they give you better control when coring holes through tile.

A
Allen
Lasted 2 holes with water cooling

Bought 2 bits since I install a lot of shower accessories. Used water cooling system when drilling, first bit lasted 2 holes and barely started a 3rd until the tip was shiny and dull. Thought it was a dud, until the 2nd bit lasted the same amount of time. Got 4.5 holes out of 2 brand new bits. My cheapo Amazon ones lasted much longer.

Disapponted and definitely would not recommend.

C
Colin H.
Grab bar machine

Like buttah finally something to rely upon

R
Robert D.
Mixed results

I bought a few of these sized bits and had mixed results with longevity. One drilled 22 holes in ceramic tile submerged in water with the next one only drilling 6 holes before the end was just metal.
Same drilling style and pressure. I did buy 5 more to try, I’ll review them soon

J
Josh M.
Core bit review

Honestly I didn't get to use the bits that I paid for. A following trade was having issues dealing with the 7/8" porcelain material we installed and I offered my bits as a possible solution. I was assured that they performed far better than the hardware store solution at 25% of the price

P
Paul G.
Nice

I was impressed I will buy it again

M
Michael M.
You’d be stupid not to buy this bit

This bit lasts foreverrrrrr!!!! Don’t be fooled by the others online. This is legit af

G
Greg C.
Munched through ceramic

Clean, precise hole right through ceramic. Made light work.

G
Greg C.
Made light work

Great tool, very fair priced

m
modern tile co
Great little bit.

Excellent

R
Robert S.
Quality

Quality products and service as usual.

J
Jason P.
Bit is Legit

Great big. Speeds through hard porcelain with ease!

J
Jason P.
Needle D is the way to be!

These bits cut fast and accurate. Barely any attempt to walk. Great quality. I’d definitely recommend these.

O
Oliver B.
:)

Love this product

J
Justin F.
Best Value!

I have only purchased the 3/16” bits, they are great quality and will be buying other products.

S
Steve K.
Diamond drill bit

Best one I’ve used yet!!

N
Nicholas P.
Top quality

Amazing top quality tools for pros

Search