Have professional tilers or DIY enthusiasts ever tried drilling holes in ultra-hard full-body porcelain tiles after they’ve been installed on a wall? Regular drill bits slip the moment they make contact, while water-cooled bits leave a muddy mess on the floor—and one slip-up can cause the entire tile to chip and become unusable.

This is the “dry drilling wonder tool” you need—a true universal brazed diamond hole-drilling bit for pipes, tiles, and glass.
Designed specifically for modern high-hardness full-body vitrified tiles, microcrystalline stone, stone slabs, marble, and glass. Say goodbye to cumbersome water-cooling systems and slippery worksites—achieve efficient dry drilling. Simply pair it with your 12V cordless drill to create perfectly round, mirror-smooth holes with absolutely no chipping.

Core Product Advantages
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1. Full-body diamond grit + 1,000°C brazing – 30% longer lifespan than ordinary sintered drill bits
During cutting and grinding of extremely hard materials, traditional electroplated drill bits are prone to grit shedding due to high temperatures, causing efficiency to plummet. We employ a vacuum brazing process to firmly bond high-quality diamond particles to the steel substrate via chemical metallurgy. This process increases the diamond protrusion height by 12.5% compared to sintered drill bits and enhances the matrix’s flexural strength. In actual testing, a single drill bit can continuously drill 80 holes without water. Whether cutting through the hardest pebble-textured glazed tiles or tempered glass, the cutting edge remains as sharp as new and never chips.

2. No Water Required – Completely Solves the Challenges of Working at Heights or in Confined Spaces
When working at heights, how to add water while drilling into walls has long been a pain point for renovation workers. This drill bit utilizes the airflow generated by high-speed rotation and the self-sharpening properties of brazed abrasive particles to dissipate heat, providing built-in cooling. Even in tight spaces next to electrical junction boxes or areas with exposed wiring, you can confidently perform dry drilling, completely eliminating the risks of slipping and electric shock caused by water, as well as wall staining and drill bit slippage.

3. 45° Bevel Cut Alignment – Precise Anti-Slip Performance Even on Fully Glossy Glazed Surfaces
Our professional R&D team has designed an efficient entry angle. When starting the drill, simply tilt the bit at a 45-degree angle and lightly touch the tile surface to grind a crescent-shaped alignment groove at low speed; then slowly straighten the drill bit while drilling and gently rocking it in a pendulum motion to help debris clear quickly, resulting in a straight and smooth hole. This “two-step” drilling technique solves the ultimate pain point for beginners: “slipping at the start” on smooth glazed surfaces.

4. 1/4-inch Universal Hex Shank – Plug-and-Play, No Slippage
Featuring an international standard 1/4-inch (6.35mm) hex shank design, it perfectly fits cordless drills, impact drills, and bench drills available on the market. The hexagonal structure provides a larger contact area, allowing it to lock securely in the chuck. This completely resolves the persistent issue of “chuck slippage and shank wear” common with standard round-shank drill bits under high-speed, high-torque conditions, ensuring undiminished transmission of high torque.

Product Specifications
Product Name    Brazed Diamond Dry-Cutting Hole Drill Bit / Tile Hole Cutter
Core Material    Diamond Grains + Alloy Steel Substrate
Shank Type    1/4-inch (6.35mm) Hex Shank
Manufacturing Process    Vacuum Brazing Process
Drill Bit Diameter    6mm / 8mm / 10mm / 12mm / 14mm / 16mm
Overall Length    40mm (extended diamond layer)
Drill Type    Hollow thin-wall drill
Compatible Drills    Handheld drills, cordless drills, bench drills (not for use in hammer mode)
Recommended RPM    Minimum 1000 RPM (Higher RPMs can reduce drilling time)
Suitable Materials    Full-body tiles, microcrystalline stone, vitrified tiles, marble, granite, quartz stone, ordinary glass, ceramics, stone slabs
Drilling Method    Dry drilling (no water required)

Application Scenarios
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Bathroom Hardware Installation: Drilling holes for showerheads, towel racks, and toilet angle valves in fully tiled bathroom walls after installation.
Kitchen Shelving: For kitchen walls made of stone slabs or marble, dry drilling ensures a dust-free process without cracking.
Electrical and Plumbing Wiring: Creating auxiliary holes in tile joints or on tile surfaces for wall-mounted switches, outlets, and water pipes.
Glass and Artwork: Precise dry drilling of ordinary glass, mirrors, jade, and similar materials.
Outdoor Stone: Waterless drilling of granite, pebbles, and other materials in gardens.