Extra Long Shank 3mm Diamond Drill Bits
***New Improved Design*** These 3.00mm x 100mm extra long shank, small diamond drill bits are ideal for drilling 3mm holes in hard materials such as glass, stone, ceramic, porcelain, shell, bone and fossils when the depth of the material requires an extra long shank to the drill bit. This extra length prevents your drill from hitting the material whilst drilling. Very popular with glass and stone artists, jewellers, restoration work and Scientists. These are solid, not hollow.
- Overall length: 100mm
- Diamond Working length: 20mm
- Diameter: 3mm
"I especially find the extra long diamond drill bits helpful because I’m drilling through beach stones about 2 inches thick. I’m using a battery powered Dremel and placing the stones in water. When in water, the bits wear very well" - Andrew Honig
Description
Tip: use with plenty of cold water, slow speed, low pressure
For further information you may 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.
Technical
Diamond grit is precisely electroplated onto a solid steel shank
Diameter: 3mm
- Overall length: 100mm
- Diamond grit: 180#
- Diamond tip length 20mm
- Shank diameter: 3mm
Customer Reviews
Questions & Answers
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Other questions and our answers
Will your drill bits fit my drill?
Clare
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).
