High-quality diamond drill bits: With very hard and extremely hard diamonds, the diamond drill bit ensures professional, clean and fast drilling. Thanks to the 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 lubricating in the drill, so you can drill holes without adding water, suitable for dry drilling. Wide applications: perfect for easy drilling in use in drilling holes on glass, marble, tile, 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 bits for dry drilling, stable drilling. In addition, it has a long service life thanks to high quality and temperature resistant diamonds. Vacuum brazing is the most efficient and precise way to produce diamond tools. This allows us to improve the removal rate and longer life. Item Description: Brand New. Compatibility with all drills and angle grinders. Dry diamond bit uses vacuum welding technology which allows the dry bit to be used at a higher temperature to effortlessly cut through hard porcelain tiles , ceramic, marble and slate. Built-in lubricant helps cooling and extends life, so no additional lubricant is needed. Vacuum welded diamond drill bits, dry drilling granite and marble, masonry, concrete, tile, ceramic, glass, hard plastic, etc. Built-in lubricant to help cool and extend life. No additional lubricant is needed. Item specifics: Material: metal. Size:65mm