FREE UK Delivery Over £50

Small Diamond Drill Bits


Bulk Discounts

Quantity Purchased Price
1 - 4 $7.18
5 - 9 $6.20
10 - 24 $4.83
25 + $4.44

Sizes available:  0.75mm, 1.00mm, 1.25mm, 1.50mm, 2.00mm, 2.50mm, 3.00mm

These precision made small diamond drill bits are excellent for drilling small holes in some of the hardest materials around. Very common with jewellery makers, these diamond drill bits are used for drilling holes in shells, drilling holes in tough glass, drilling holes in beads, drilling holes in tough sea glass and drilling holes in hard stone, gemstone, concrete, pebbles, precious and semi-precious stone.

**Sold Individually**

Please read on for further information...

Earn 0 reward points
$0.00 $7.18


Out Of Stock
Add To Wishlist

Want to be notified when this product is back in stock?
Complete the form below and we'll send you an email when it is.


How to use Diamond Drill Bits:

You will need an adjustable chuck attachment for your drill in order to hold the small shank sizes of these drill bits. Please look at the tehnical 'tab' to read the shank size dimensions.

If you have a Dremel we highly recommend using the Dremel 4486 Multi Chuck to hold these small drill bits.

Tip: The following three crucial elements when drilling will prevent the diamond grit wearing off or burning away, will prevent the drill bit from snapping (too much pressure applied), prevent your material from cracking,  and extend the life of your drill bits.

  • Use with plenty of cold water (if drilling in a container, change the water when it turns cloudy)
  • Use on a slow speed of 5,000RPM
  • Use at low pressure, let the drill do the work 

In order to get the best from our diamond tipped drill bits, please ensure you read through the Tutorials section on our blog before attempting to use our drills for the first time. Here you will find tips and video footage on how to drill glass, how to drill gemstones, how to drill bottles, how to drill pebbles and how to drill sea glass. There are also helpful hints on the correct speeds and pressure to be used.

You might also like to read our article: 12 Things you Should Know about Diamond Drill Bits

Disclaimer. Using rotary tools near water has never been, to the best of our knowledge, endorsed by any of the rotary tool manufacturers. If you do choose to drill near water or with attachments under water connected to your drill then you do so at your own risk. Please be aware that mixing electricity and water can be very dangerous.


Diamond grit is precisely electroplated onto a hardened steel shank

Diameter: 0.75mm

  • Overall length: 28mm
  • Diamond tip length: 4.00mm
  • Shank: 0.50mm

Diameter: 1.00mm

  • Overall length: 38mm
  • Diamond tip length: 3.50mm
  • Shank: 0.70mm

Diameter: 1.25mm

  • Overall length: 38mm
  • Diamond tip length: 5.00mm
  • Shank: 0.85mm

Diameter: 1.50mm

  • Overall length: 38mm
  • Diamond tip length: 4.00mm
  • Shank: 1.10mm

Diameter: 2.00mm

  • Overall length: 38mm
  • Diamond tip length: 3.50mm
  • Shank: 1.50mm

Diameter: 2.50mm

  • Overall length: 38mm
  • Diamond tip length: 3.50mm
  • Shank: 2.00mm

Diameter: 3.00mm

  • Overall length: 44mm
  • Diamond tip length: 12mm
  • Shank: 3.00mm

Diameter: 3.00mm x 2.35mm

  • Overall length: 42.5mm
  • Diamond tip length: 12mm
  • Shank: 2.35mm

Customer Reviews

They are great products. I am happy with them.
Very sharp initially, and lasted quite well.
quality &speed of delivery
I've only used 0ne drill bit so far, out of 10 I bought. That's because it's still doing the job efficiently.
good service and products
Excellent drill bits for fused glass.
These small drills do a great job, and last well. I use them on glass only. One 1,5mm drill has drilled through about a dozen sheets of 3mm thick glass, and is still very usable.
They are still being tried
Very good for the job in hand drilling glass and pebbles.
they were great and very good quality
wonderful drills. work very well.

Questions & Answers

Ask a question using the form below

Display my question on your website (untick to keep private)

Other questions and our answers

Hi, I need a diamond drill bit for my Dremel 3000 for use on semi-precious stones. Do you have these in stock? Many thanks.

Jean Johnson

Hi Jean, Yes you're on the right page, the Small Diamond drill bits are ideal for drilling through semi-precious stones and other such hard materials.  You will need an adjustable chuck to hold the very tiny shanks of these drill bits into your drill. For your Dremel we recommend the Dremel Multi Chuck.

Hi, I want to order diamond bits to drill 1mm holes in 500um thick borosilicate glass wafer. Could you please tell me if 0.75mm diameter drill bit would be perfect for that or not. Also, what other items I would need to drill hole along with drilling machine. Besides, could you suggest me which drilling machine would be sufficient for this job. Thank you. Best Regards Deepika Sharma

Deepika Sharma

Hi Deepika,

Good to hear from you. We recommend using a Dremel 3000 drill with a Dremel Multi Chuck and use either the small diamond drill bits or the small diamond core drills. If you are new to drilling holes in glass we recommend trying the core drills first. The size of the core drill indicates the size of the hole you will achieve, so if you need a 1mm hole, you will need to purchase the 1mm diamond core drills. All the best with the project.

Will the small diamond drill bits work in a drill press ?


Hello Ann, Yes they work perfectly well in a drill press.  They will work in any drill so long as there is an adjustable chuck to hold the shank of the drill bits. 

Will your drill bits fit my drill?


Our drill bits will fit all rotary drills so long as you have an adjustable collet or chuck with which to hold the shank of our very small drill bits. Sometimes when buying a drill they will come with an adjustable collet but if you find you are in need of one then we supply either a Dremel Multi Chuck (DMC4486) or a Dremel Collet Nut Kit (DCNK4485).

I want to enlarge some very small holes in 4 -6 mm rough uncut diamond beads. I need the holes to be 1mm. to accommodate .8 - 1 mm silver wire. Would the drill bits be suitable for this? Should I use a twisted or core drill bit?


To enlarge holes you need to use the Small Diamond Twist drills. 

These are ideal for increasing the size of holes in beads once the hole has been drilled. 

Hi there ,Can this drill bit 3 mm be used for drill on vitrified /mosaic tiles ? Thanks .... antony


Hi Antony, 

Good to hear from you. 

Yes, the small diamond drill bits can be used on this material.  They are ideal for hard materials so glass, enamel, ceramic, stone, glazed pottery and shell, that sort of thing.  

we wanted to make a 5mm hole. Is that possible? In stones from the beach.

kent francis

Yes, you will need a 5mm diamond core drill.

This blog article will help show you how to drill the holes through the pebbles you have:

What is the diameter of the part that goes in the drill? Will these fit in a standard dremel? If not is there a light weight tool that can be used with them? I'd like to carve some small stones.

Eric Grab

Take a look at the technical tab where there are detailed specifications of each size drill bit and the diameter size of the shank. (the bit that goes in your drill)  You will need the Dremel Multi chuck which attaches to your drill in order to hold the tiny shanks of these drill bits. 

Hi, are the bits for wet or dry use, and is a slower speed preferable to a faster one. Cheers.


These are to be used wet on a slow speed with little pressure  

The item has been added to your basket

Continue Shopping
Proceed To Checkout
Receive our Newsletter and exclusive discounts