Diamond Dry Drill Bits Hole Saw Cutter for Granite Marble Ceramic Tile Glass Hex Head Bits

Do you have the following troubles when you punching? ❌Wires next to it,not safe to add water ❌Drilling at high altitude,inconvenient to add water ❌Glass/jade is slippery with water and cannot be punched. Choose us Self-cooling Diamond Dry Drill Bit to help you easily solve problem.Meet your actual needs Diamond Drill Bit integrated with high-quality cooling wax, dry drilling without water,Vacuum Brazed technology and high quality diamond grains provide high efficient working and long time performance.   MAIN FEATURES ► Dry Drilling Design Diamond Drill Bit integrated with high-quality cooling wax lubricant inside which melts while dry drilling and cools the cutting surface;No need to add water, which can effectively reduce the temperature of the drill bit and increase the service life of the drill bit. ► Efficient Drilling Original high-quality wax head material, thick brazing emery,great durability, sharper drilling and higher efficiency. ► Practical Hexagonal Shank Design It adop