gemstone pre- polishing
reducing fatigue and increasing efficiency
Available in coarse to ultra-fine grits (60–3000 grit)
Extended Tool Life: Reduces wear on core drills
Instant Grit Swapping
14mm Diamond Donut Bur – 80 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic Glass Drill Bit gemstone pre- polishingDiamond Drill Bits are precision tools for fine detailing and material processing. Discover the versatility of diamond drill bits, designed with durable diamond grit for aggressive cutting, precise shaping, and long lasting performance. Available in multiple gritscoarse (40,60,80,120) for rapid material removal, and fine(240,600,1200) for detailed engraving and polishing. These tools suit lapidary artists, jewelers, sculptors, and precision craftsmen.