8mm 10pcs 30Gri 6mm Shaft Diamond Inverted Trapezoid Carving Bur

The Diamond Twist Drill Bits are engineered for high-speed, precise drilling in ultra-hard materials like glass, ceramics, stone, gemstones, and hardened alloys. Featuring a diamond-coated spiral design, these bits deliver clean, smooth holes with minimal chipping or cracking, ideal for both industrial and artistic applications.

Key Features

• Diamond-Coated Flutes: Galvanically bonded diamond grit ensures rapid material penetration and extended tool life.

• Twist Design: Efficient chip removal and heat dissipation during high-speed drilling.

• Multi-Shank Sizes: Available with 3mm or 6mm shanks for compatibility with rotary tools, drill presses, and flexible shafts.

• Versatile Applications: Perfect for creating holes in brittle or heat-sensitive substrates.

Applications

• Lapidary & Jewelry: Drill gemstones, jade, or crystal beads.

• Glass & Ceramics: Precision holes in stained glass or ceramic tiles.

• Industrial Use: Drilling hardened steel or composite materials.

Technical Specifications

• Shank Sizes:6mm.

• Max RPM: 15,000 (use with water cooling).

• Material Compatibility: Mohs 7–10 substrates.

Usage Guidelines

1. Cooling: Always use with water or coolant to prevent overheating.

2. Speed Control: Do not exceed 15,000 RPM.

3. Pressure: Apply gentle, consistent force for optimal results.

4. Safety: Wear protective goggles and masks.

Why Choose These Bits?

• Precision: Clean, burr-free holes with minimal material loss.

• Durability: Outperforms carbide or silicon carbide bits on hard surfaces.

• Versatility: Suitable for delicate jewelry work and industrial drilling.