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Large Diamond Ball Burrs


4mm - 50mm

These Large Diamond Coated Ball Burrs are perfect for pre-forming, engraving, carving, grinding and sculpting in stone, glass, ceramic, porcelain and hard wood.

Please refer to the information under the technical tab for the shank sizes and grits available.

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  • For carving, engraving, shaping and texturing
  • For use on all hard materials such as glass, stone, hard wood, ceramics
  • Slow drill speed, not exceeding 12,000rpm
  • Use with a constant drip or flow of water
  • Use in a die grinder, hand held drill, hobby drill, pendant motor, micro motor, drill press

Each burr is evenly electroplated with diamond grit and impregnated onto steel.

Always wear sufficient safety goggles and a face mask and be careful not to exceed a drill speed of 12,000rpm and use with very little to no pressure.

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 steel shank

4mm Diameter

  • Overall length 45.5mm
  • Shank size: 2.35mm or 3/32"
  • Grit #180

6mm Diameter

  • Overall length 45.5mm
  • Shank size: 2.35mm or 3/32"
  • Grit #140

8mm Diameter

  • Overall Length: 47mm
  • Shank size: 3mm
  • Grit #140

8mm/10mm Diameter with 2.35mm or 3/32" shank

  • Overall length: 47mm/50mm
  • Shank size: 2.35mm or 3/32"
  • Grit #140

10mm Diameter: Medium Grit #140 or Coarse Grit #80

  • Overall length: 50mm
  • Shank size: 3mm
  • Medium Grit #140 or Coarse Grit #80

12mm/15mm Diameter

  • Overall length: 65mm/70mm
  • Shank size: 6mm
  • Grit #80

20mm Diameter

  • Overall length 70mm
  • Shank size: 6mm
  • Grit #80

30mm Diameter

  • Overall length: 78mm
  • Shank size: 6mm
  • Grit #60

40mm Diameter

  • Overall length: 100mm
  • Shank size: 8mm
  • Grit #60

50mm Diameter

  • Overall length: 92mm
  • Shank size: 8mm
  • Grit #60

Customer Reviews

Excellent for my glass engraving, very hard wearing
Good quality diamond burr. Used it to carve draining board grooves in a large area of slate. Worked beautifully in my die grinder (with water to lubricate and keep the dust down). Plenty of life still left in the burr. Recommended : )

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