The ideal drill for drilling shells, ceramic and stones. These drills have diamond particles that are electroplated onto a hardened surface.
The set of six includes:
0.75, 1.00, 1.25, 1.50, 2.00 and 2.50mm.
Best used at speeds between 5,000 and 20,000 RPM - These must be used with a lubricant.
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