5 Pcs Brazed Diamond Drill Bits Dry Tile Drill Bits 6/6/8/10/12 Mm Tile Drill Bit For Granite Marble Glass Concrete Hard Materials Precision Diamond Drill BitsThese ceramic tile diamond drill bits are made with brazed diamond and coated with diamond particles to create a stronger, more efficient drill head and for working with a wide range of delicate materials.Dry Drilling DesignBuilt-in diamond drill bit set with wax lubricant inside which melts during dry drilling and cools the cutting surface. Water can be used as additional cooling to extend the life of the bit. This tile drill bit comes with a portable storage case for convenient use and storage.Unique DetailsDiamond coating improves drilling speed, round shank compatible with most machines such as hand drill, die grinder Angle, bench drill, side flutes help remove debris and drill smooth, fast holes. Useful depth marking for precise project.Wide ApplicationOur Tile Drill Bit Set set to drill clean holes on hard materials especially tiles, porcelain floors, granite, ceramics, glass , marble, stone, masonry, brick. So you can create precision holes with less breakage or splintering.Add versatility to your tool5-piece set of cutters for drilling 2 x 6mm, 8mm, 10mm and 12mm, four sizes to meet your different needs.