Feature:1. HIGH PERFORMANCE DIAMOND SINTERED: These drill bits are designed with advanced diamond sintering technology, providing efficient and precise cutting and grinding capabilities on marble, ceramic, and glass filled tiles.2. DRY DRILLING AND GRINDING TECHNOLOGY: Equipped with a cooling wax wick, these drill bits allow for dry drilling and grinding without water, as the cooling wax helps prevent overheating during use.3. HEX SHANK DESIGN: The universal hex shank ensures a secure fit with most standard drills, enhancing stability and control during the drilling or grinding process for optimal performance.4. VERSATILE DRILLING AND GRINDING USES: These diamond drill bits are not only suitable for clean, smooth drilling but also suitable for light grinding, allowing for smooth edges and surfaces as needed.5. IDEAL FOR PROFESSIONAL CONTRACTORS: With their self cooling wax wick that eliminates the need for water, these bits offer exceptional durability and longevity thanks to the diamond coating for superior wear resist.6. APPLICATIONS: Suitable for dry drilling and light grinding on materials such as glass filled tiles, ceramics, porcelain, and marble. Ideal for home renovation projects, professional installations, and maintenance tasks.Specification:Item Type: Diamond Hole SawMaterial: Diamond, Cooling WaxSize: Approx. 6mm / 0.24in8mm / 0.31in10mm / 0.39in12mm / 0.47inChoose Range: Hand Drill, Electric Drill, Bench DrillCharacteristic: No water needed, dry drilling directlyApplication: for Various Ceramic, Granite, Ordinary Glass, Quartz Stone, Ceramic Tile, Glass Brick, etc..Package List:4 x Diamond Hole Saw4 x Storage Box