2 Pcs 6mm Diamond Drill Bits Core Bits with M14 Thread for Dry Drilling in Porcelain Tile Granite Marble <p>Vacuum brazed (VB) diamond core bits are professionally manufactured for dry or wet drilling in a wide range of ceramics, porcelain, tiles, granite, marble, sandstone, and other hard materials.</p><p></p><p>Thanks to VB technology, the diamond core bits can drill hard ceramics and stone dry or wet more efficiently and with a longer tool life.</p><p></p><p>Diamond core bits with M14 threaded connections can be used directly on the grinding machine.</p><p></p><p>They are easy to handle, suitable for dry and wet drilling, and can be used in all conditions. The perfect tool at your fingertips.</p><p></p><p>Diamond drill bits can be used to drill holes for water inlets, drainage outlets, lighting points, etc.</p><p></p><p>Diamond drill bits can dry drill dozens of holes in hard porcelain and last much longer (nearly 10 times longer) than electroplated porcelain. Wet drill bits can drill even more holes.</p><p></p><p>To extend the life of your diamond drill bit, follow the correct operating instructions.</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.