35x18mm Diamond Concave Edge Drill Bits 240Grit 6 Shank | Concave Cylinder & Ring Rounding Bits lapidary diamond lap and edge finishing

and edge finishing

Whether you’re smoothing cabochons

Flatness Control: Ensures uniform surfaces across materials with mixed hardness

with options for full-face or no-hole designs to match your polishing workflow

🔹 Why Choose sintered Over Plated/Brazed Laps

35x18mm Diamond Concave Edge Drill Bits 240Grit 6 Shank | Concave Cylinder & Ring Rounding Bits lapidary diamond lap and edge finishingDiamond 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.