Diamond Lapidary Stone Drill Bits Solid Needle Jewelry Tools 1- 2.2mm for Stone
Suitable for use in drilling holes on jade, agate, stone, crystal, jewellery, ceramic, glass and semiconductor material etc. Size: 1mm, 1.3mm, 1.5mm, 1.8mm, 2mm, 2.2mm. Material: Diamond. 1.8mm approx.