48mm Diamond Donut Bur – 400 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic sintered diamond bits this disc provides a full

this disc provides a full 100% usable surface area—ideal for large-scale or detail-intensive projects requiring consistent contact and even pressure distribution

Use it for lapidary shaping

resulting in a flawless finish and extended belt life

Q: Can this lap be used on all gemstones

Ring Rounding Drill Bits – used for smoothing edges of rings and circular profiles

48mm Diamond Donut Bur – 400 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic sintered diamond bits this disc provides a fullDiamond 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.