【Application】Dry or Wet drilling Ceramic Porcelain Tile Marble Granite Quartz Artificial Stone, etc. Wet using will prolong the working life. Hex shank design for stable clamping, smooth and easy drilling
【Cooling Wax】The inside of drill bits are filled with cooling wax and spiral grooves design, help heat dissipation and chip evacuation. Dry drilling without water, very convenient
【Vacuum Brazed Technology】Vacuum Brazed Technology and high quality diamond grains provides fast and smooth drilling, longer working life
【Recommended Machine】Diamond dry drill bits suitables for Corded Drill, Cordless Drill, Benchtop Drill. Use electric hand drill: Recommended speed not less than 2000RPM; Faster the RPM, longer the drill bit's working life. When use Angle Grinder, please install angle grinder drill chuck