70mm 8mm Shaft Electroplated Diamond Conical Countersink Drill Bit

Engineered for precise beveling, chamfering, and countersinking on hard materials such as glass, stone, ceramics, and gemstones. The conical shape allows for smooth entry and clean edges, while the electroplated diamond coating provides long-lasting durability and efficient cutting performance. Ideal for lapidary work, glasswork, and fine detail finishing in crafts and industrial applications.