About This

• 12-Piece Professional Dry Diamond Drill Bit Set: Includes 10pc multi-size diamond core drill bits (2×5mm /3/16", 2×6mm/1/4", 2×8mm/5/16", 2×10mm/3/8", 2×12mm/1/2" diamond hole saw) + 2pc tungsten carbide pilot drill bits. This all-in-one tile drill bit set fit porcelain tile, ceramic, glass, marble, granite, stone, jade, etc. Covers a wide range of applications: kitchen & bathroom renovation, home & commercial decoration, auto repair, equipment maintenance, outdoor furniture & fence installation
• No More Wandering or Slipping: Our glass drill bit set includes a carbide pilot bit that creates an accurate dimple, locking the diamond hole saw on target to prevent slipping on smooth surfaces and protecting your expensive tiles from scratches. Start at a 45° angle for chip-free results – delivering clean, precise holes in fragile ceramic tile, glass tile, and even vertical walls
• High-Carbon Steel & Vacuum Brazing: This diamond core drill bit set uses a premium high-carbon steel body with advanced vacuum brazing technology. Industrial-grade diamond grit is firmly brazed onto the bit body. Compared to standard electroplated diamond drill bits, our vacuum brazed diamond drill bits offer higher hardness, superior wear & corrosion resistance. The upgraded high-carbon steel shank resists bending and breaking, delivering 3 times longer service life than conventional electroplated bits
• Built-In Wax Cooling & Cooling Performance Upgrade: Each porcelain tile drill bit is pre-filled with premium cooling lubricant wax that melts automatically during drilling to cool the cutting surface, reduce friction, and prevent diamond grit shedding. This design eliminates the need for continuous water supply in dry drilling, ensuring high-efficiency cutting and extending diamond drill bit life. For hard materials like granite and marble, wet drilling with water provides a longer lifespan. The diamond tip drill bit are optimized for both dry and wet drilling
• Versatile Use: These diamond drill bits adopt a universal round shank, compatible with most electric drills, bench drills and other common power tools. Widely suitable for ceramic tile, porcelain tile, ceramic floor, glass, marble, granite, natural stone, jade, glass bottles, ceramic pots, bathroom tiles, kitchen backsplash, stone countertops, etc. (NOT for concrete, metal, steel, wood, plastic). Laser-engraved size marks help you accurately control drilling hole dimensions. This 10pc ceramic drill bits set comes with a dedicated storage box for easy organization and portable storage