14mm Diamond Donut Bur – 80 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic Glass Drill Bit Faceting Laps for gemstone: Works

Faceting Laps for gemstone: Works perfectly on quartz

7mm (1/2") center hole

ensuring consistent performance and an extended lifespan

gemstone pre- polishing

Featuring a 5mm deep sintered diamond matrix in a durable metal bond

14mm Diamond Donut Bur – 80 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic Glass Drill Bit Faceting Laps for gemstone: WorksDiamond 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.