High Quality Diamond Tile Drill Bit: Diamond drill bit with very hard and extremely hard diamonds, the diamond drill bit ensures professional, clean and fast drilling. Thanks to high quality industrial diamonds, the tile drill bit has a fast cutting speed. Waterless Drilling: Diamond tile drill bit for efficient and clean drilling. Filled with cooling wax, used for cooling and lubrication in the drill, so you can drill holes without adding water, suitable for dry drilling. Wide Applications: Perfect for easy drilling in use in drill holes on glass, marble, tiles, fiberglass jars, mable slate, granite (granite drill), ceramic (ceramic drill), hard floor tiles, clinker brick straps, stone slabs, hard tiles. Works with all electric drills and angle grinders. Stable and Durable: Diamond drill bit for dry drilling, stable drilling. In addition, it has a long service life due to high-quality and temperature-resistant diamonds. Vacuum brazing is the most efficient and precise way to produce