Diamond Coated Drill Bits

These high-quality twist drills have a 2.35mm shank and are electroplated with diamond particles (140/170 grit), they are the ultimate for drilling glass, stones, sea glass pearls or ceramics (for drilling metals use a regular steel drill bit, C162). 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. 

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. 

• Size: 0.8mm (20 gauge)
           1mm (18 gauge)
           1.5mm  (15 gauge)

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Delivery Information:

Orders placed before midday are despatched the same day (wherever possible).

*Orders for Next Day Delivery must be placed before 12pm. You will receive your order the following day not including Saturday & Sunday (Deliveries for highlands & islands may take a little longer). Next day Delivery and Saturday Delivery are signed for services.

 *Orders for Next Day Delivery over 1.5Kg must be placed before 10.30am. You will receive your order the following day not including Saturday & Sunday (Deliveries for Highlands & islands may take a little longer).

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For details & FAQ about ordering over the Christmas period click here.