Diamond Drill Bit – 12 mm Vacuum Brazed Diamond Hole Saw for Porcelain Tiles Ceramic Marble Granite Quartz M14 Thread

Diameter 12mm, total length 60mm, diamond height 10mm, diamond grit #40/45, M14 thread Diamond core drill bits for dry or wet drilling holes in porcelain tiles, marble, granite, stone, quartz, etc. Wet drilling will drill life Inside the 6-16mm drill bits are filled with wax cooling, keep the drill bits cool and lubricated for dry drilling, with greater efficiency and better Vacuum brazed technology and #35/40 diamond grits provide highly efficient working performance, faster drilling speed and longer service M14 Thread Angle Grinders. Recommended speed 6000rpm, maximum speed 11000rpm. If you want to use an electric drill or other machine, you can use a hex shank adapter