- Drilling and mortising of stone, glass, and seashells.
- Allowable Number of Rotations (min-1r.p.m)
- Shaft Diameter (phi mm)
- HSS, electrodeposition diamond
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2 Customer Reviews
The reviews are automatic translation.
Expansion of hole diameter of bead
On 2016-11-01 14:45:17
It was good because the distance between the diamond portion and the shaft was 15 mm. It helped to expand the hole diameter of beads of up to 30 mm.
Used to drill a crystal ball
On 2015-04-20 18:05:51
When I used it for drilling a crystal ball, I could not cut it after opening 4 or 5 holes. It was disappointing because it was not durable. Even though the price is reasonable, it is not much different from cheap Chinese made.
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