Diamond Tile Drill Bits 40mm SANLEETEK Vacuum Brazed Hole Saw for Ceramic Porcelain Marble Granite M14 Thread

【Specifications】Diameter 40mm, Total length 60mm, Diamond height 10mm, Diamond Grit: #35/40, M14 Thread 【Application】Diamond tile drill bits are worked great for dry and wet drilling holes through hard porcelain tile, ceramic tile, granite, marble, etc. Add water could prolong the lifetime 【Feature】Vacuum brazed technology and high-quality diamond grains provide high efficient working performance, faster drilling speed and longer service life 【Unique Detail】The inside of 6-10mm drill bits are filled with cooling wax helpful for cooling and lubrication. The design of the U-groove tooth shape above 20mm is sharper, facilitating the discharge of debris 【Easy to Operate】The bits is suitable for M14 thread angle grinder. Recommended speed 6000RPM, maximum speed 11000RPM. If you want to install the bits on the drill machine, you need an adapter