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 2 mm 3mm (1/8")
Wet drilling only.These are delicate, very small diameter diamond drill bits. The diamond coating is very thin. Can not take any abuse.