China Suppliers M14 Dry Vacuum Brazed Diamond Hole Saw Core Bits 6-120mm for Drilling Tile Marble Granite Stone Factory

M14 Blue Vacuum Brazed Diamond Core Drill Bits: High-Performance Dry Drilling Solution

Our M14 Blue Vacuum Brazed Diamond Core Drill Bits are professional-grade drilling tools engineered for precision and durability across a wide range of hard materials. Crafted with high-quality diamond particles and steel substrates, these bits feature a standard M14 thread that is universally compatible with most angle grinders on the market, ensuring easy and stable installation for both professionals and DIY enthusiasts.

Available in 32 precise sizes from 6mm to 120mm, this series covers nearly all drilling needs for home renovations and industrial projects. Each bit has a total height of 60mm with a 15mm diamond working layer, optimized for consistent drilling depth and efficiency. The striking blue coating not only enhances corrosion resistance but also allows for easy identification on job sites.

A key feature is its dry drilling capability, eliminating the need for water cooling. For smaller sizes (6mm–12mm), an integrated wax core provides automatic cooling during operation, preventing overheating and extending tool life. These bits are ideal for drilling precise, chip-free holes in ceramic tiles, granite, marble, natural stone, pebbles, and concrete walls, making them a cost-effective and time-saving solution for tiling, plumbing, and masonry projects.

• Dry drilling without water feeding; 6mm–12mm bits with wax inside helps cool the bits automatically
• Wide application for drilling tile, ceramic, granite, marble, stone, and more
• Vacuum Brazed technology provides much longer working life than electroplated ones (generally 3–5×)
• Less chipping, minimized breakage, less heat generation, and better finish quality
• High diamond exposure rate provides faster and more aggressive drilling
• Save your money and time with extended tool lifespan