30 pcs SET 10 pcs. 1mm 10pcs. 2mm 10 pcs. 3mm Diamond Drill Bit Cylindrical Burr Kit Jewelry Beach Sea Glass Shells Gemstones Lapidary 30pcs. 1 mm ...

Wet drilling only. These are delicate, very small diameter diamond drill bits. The diamond coating is very thin. Can not take any abuse.Set of 30 pcs. Assorted Mixed 1mm 2mm 3mm 10 ea. Diamond Drill B..