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 Saw Material: Diamond, Cooling Wax Size: Approx. 6mm / 0.24in8mm / 0.31in10mm / 0.39in12mm / 0.47inChoose Range: Hand Drill, Electric Drill, Bench Drill Characteristic: No water needed, dry drilling directly Application: for Various Ceramic, Granite, Ordinary Glass, Quartz Stone, Ceramic Tile, Glass Brick, etc.. Package List: 4 x Diamond Hole Saw 4 x Storage Box