Diamond Dry Core Drill Bit Set – 4 Sizes for Tile & Granite

Industrial Diamond Dry Core Drill Bit Set – 4-Piece for Tile, Glass, Marble & Granite

Tackle your toughest drilling projects with confidence. This 4-piece Diamond Dry Core Drill Bit Set is engineered for clean, precise holes in hard, brittle materials — no water cooling required. Whether you're mounting bathroom fixtures, installing kitchen hardware, or working on a stone renovation project, these bits deliver fast, chip-free results every time.

Made in Mainland China.

Key Features

• Ultra-Dense Diamond Coated Head: High-purity industrial diamond particles are electroplated evenly on the cutting end for fast, burr-free performance. Drill cleanly through fragile materials like ceramic tile without chipping or cracking the surface.
• No-Water Dry Drilling Design: Advanced high-bonding electroplating secures diamond particles firmly even under high-temperature dry operation — no water supply needed. Keep your workpiece dry and your workspace clean.
• High-Strength Carbon Steel Shank: Forged from high-hardness carbon steel with a standard hexagonal shank, these bits grip securely in most electric drills, angle grinders, and rotary tools. Expect long service life with no shank deformation under heavy use.
• 4 Versatile Sizes Included: Precision-machined to strict dimensional standards — the set contains 6mm, 8mm, 10mm, and 12mm bits. Cover everyday drilling needs from small hook mounting to pipeline hole opening without purchasing separate bits.
• Wide Material Compatibility: Dense, uniform diamond particle distribution makes these bits compatible with full ceramic tile, vitrified tile, glass, ceramic, marble, granite, microcrystalline stone, quartz stone, and other hard brittle materials.

Specifications

Applications

• Bathroom & kitchen tile installation and fixture mounting
• Glass panel drilling for shelving or décor
• Marble, granite, and quartz countertop work
• Home renovation and DIY construction projects
• Stone, microcrystalline, and vitrified tile processing

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Note: Colors may appear slightly different due to monitor brightness and lighting conditions. Please refer to the actual product received. Minor measurement deviations may occur.

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: Do these diamond core drill bits really work without water cooling?

A: Yes! These diamond dry core drill bits feature an advanced high-bonding electroplating process that locks diamond particles firmly in place even during high-temperature dry drilling. You can drill tile, glass, marble, and granite without any water supply — making them ideal for indoor installations and situations where water would damage the workpiece or surrounding area.

Q: What materials can I drill with this 4-piece diamond core drill bit set?

A: This set is compatible with a wide range of hard and brittle materials including full ceramic tile, vitrified tile, glass, ceramic, marble, granite, microcrystalline stone, quartz stone, and similar hard surfaces. They are not recommended for wood, soft plastics, or standard metal surfaces.

Q: Will these bits fit my existing drill or rotary tool?

A: Yes. Each bit features a standard hexagonal shank design that is compatible with most electric drills, angle grinders, and rotary tools available on the market. The secure grip prevents slipping during operation for safer, more accurate drilling.

Q: What sizes are included in the diamond drill bit set?

A: The full 4-piece set includes 6mm, 8mm, 10mm, and 12mm diamond core drill bits — covering the most common hole sizes needed for everyday home renovation, tile installation, fixture mounting, and stone processing tasks.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.