12-Pc Diamond Core Drill Bit Set 6–35mm | Tile & Stone Hole Saw

12-Piece Vacuum Brazed Diamond Core Drill Bit Set | 6–35mm Dry Hole Saw Kit

Tackle your toughest tiling and masonry projects with precision and confidence. This 12-piece vacuum brazed diamond core drill bit set delivers clean, accurate holes through porcelain tile, ceramic, marble, granite, brick, and concrete — no water cooling required. Whether you're a seasoned tradesperson or a dedicated DIYer, this versatile kit has you covered from small pilot holes to larger cutouts.

Why Choose Vacuum Brazed Diamond Drill Bits?

Vacuum brazing bonds diamond abrasive particles directly to the steel shank at an exceptionally high bond strength. This process ensures the diamonds stay firmly in place during aggressive dry drilling, delivering faster cutting speeds, longer bit life, and cleaner hole edges compared to standard sintered or electroplated alternatives.

What's Included

• 12 drill bits in sizes: 6 / 8 / 10 / 12 / 14 / 16 / 18 / 20 / 22 / 25 / 30 / 35 mm
• Universal shank compatible with standard power drills and drill presses

Key Features

• Vacuum Brazed Diamond Coating — Superior bond strength for extended durability and consistent cutting performance
• Dry Cutting Capable — No water or coolant needed; suitable for dry drilling applications
• Wide Size Range — 6 mm to 35 mm covers the most common hole sizes for fixtures, outlets, pipes, and anchors
• Versatile Material Compatibility — Porcelain tile, ceramic, marble, granite, natural stone, brick, and concrete
• Precision-Engineered Core — Optimized flute geometry channels dust away for a clean, chip-free bore
• High-Strength Steel Body — Resists heat build-up and flexing during extended use

Specifications

Compatible Materials

• Porcelain Tile
• Ceramic Tile
• Marble & Granite
• Natural Stone
• Brick
• Concrete

Safety Note

Always wear appropriate eye protection and a dust mask when drilling masonry materials. Keep hands clear of the bit during operation. For guidance on power tool safety, visit the OSHA Power Tools Safety Resource.

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Frequently Asked Questions

Q: Can these diamond core drill bits be used dry, or do they require water cooling?

A: These vacuum brazed diamond drill bits are specifically designed for dry drilling — no water or coolant is required. The vacuum brazing process creates a strong enough bond to handle the heat generated during dry use, making them ideal for quick, on-site drilling without the mess of wet setups. For best results, use short intermittent bursts and allow brief cool-down periods between holes.

Q: What materials can I drill through with this 12-piece diamond hole saw set?

A: This kit is engineered for hard and abrasive masonry materials, including porcelain tile, ceramic tile, marble, granite, natural stone, brick, and concrete. It is not recommended for wood, metal, or soft plastics, as diamond abrasives are optimized for mineral-based materials.

Q: Are these drill bits compatible with standard power drills?

A: Yes — the bits feature a universal round shank that fits most standard electric drills, cordless drills, and drill presses. Simply ensure your chuck can accommodate the shank diameter before use.

Q: How do I get the cleanest hole when drilling through porcelain or marble?

A: For the cleanest results, start at a low-to-medium speed to establish a guide groove, apply steady moderate pressure, and avoid forcing the bit. Use intermittent pressure to allow dust to clear from the cutting surface. Placing a piece of painter's tape over the drilling area can also help prevent surface chipping on polished tiles.