Diamond Coated Tipped Drill Solid Bits Lapidary Jewelry Agate Glass 1.0mm-2.2mm

Use high-speed(Up 20000 RPM) to drill holes with our drill bits. -Drill hole on agate. -Try to clip the needle as short as possible when you hit it, and make a good locating hole on both sides of the bead first, then clip it a little longer and drill straight through the C.

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