Diamond Coated Drill Bits

These quality twist drills are electroplated with diamond particles, they are the ultimate for drilling glass, gemstones, sea glass, pearls or ceramics (for drilling metals use a regular steel drill bit).

The technique for drilling is slightly different from the drilling metals; they need to be used at a slow speed and water must be used as a lubricant. They are available in a variety of useful diameters.

If you are not familiar with the technique, we recommend purchasing our 'Using Diamond Coated Drill Bits' advice leaflet. 

Available in a range of sizes:

• 0.8mm (20gauge) (2.3mm shank)
• 1mm (18 gauge) (2.3mm shank)
• 1.5mm  (15 gauge) (2.3mm shank)
• 2mm (12 gauge) (1.6mm shank)

If you are intending to use these drill bits with a Dremel 4000 Multi Tool you will need a multi chuck tool

If you are considering purchasing these for enlarging the holes in beads you may prefer our deluxe bead reamer set which is specifically designed for this purpose. 

All of our products are covered by our guarantee.

Click below to read our helpful pages:

• How to drill sea glass for jewellery making
• 4 drilled sea glass projects
• Advice page on Dremel 4000 Multi Tool
• Purchase 'Using Diamond Coated Drill Bits' leaflet
• How to make bead holes bigger

THESE WORK! (by Barbara 01/02/2019)

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We are still open and dispatching orders as quickly as we can but please allow for some delays and read our Coronavirus update page for full details here.

Orders are dispatched by us Monday to Friday, excluding Bank Holidays.

Delivery Information:

*Orders for Special Delivery, Priority Signed for Service must be placed before 12pm, Monday to Friday. Heavy orders weighing over 1.5Kg must be placed before 10.30am - usually only orders containing machines and multiple tools. Special Delivery is prioritised and should arrive next day but this is not guaranteed. Special Delivery does not apply to Saturday and Sundays and deliveries for highlands & islands may take a little longer. Special Delivery and Saturday Delivery are signed for services.

Click here for full delivery information

*Update to services -  Special Delivery, Priority Signed for Service is prioritised but no refund of delivery fees will be available for late deliveries.

UPDATE: 21st December 2020 - we have paused international deliveries and will resume as soon as we can.