40mm Diamond Donut Bur – 400 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic grit-14000 this disc performs like a

this disc performs like a professional-grade glass shaping shaping disc and stone  shaping disc

even on fragile materials like glass

meaning they do not work harden during diamond embedding

Bullet Head Drill Bur – ideal for detailed engraving and material removal on metals and stones

Ideal for ultra-hard materials like wood

40mm Diamond Donut Bur – 400 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic grit-14000 this disc performs like aDiamond 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.