FOCSTOL Dry Diamond Drill Bit Set - 5pcs 6mm Diamond Hole Saw Kit with Triangle Shank for Porcelain Tile Ceramic Granite Marble Quartz

FOCSTOL Dry Diamond Drill Bit Set - 5pcs 6mm Diamond Hole Saw Kit with Triangle Shank for Porcelain Tile Ceramic Granite Marble Quartz

【Size】Totally 5pcs/set: Diameter 1/4''(6mm); Total length 65mm; Diamond height 10mm; Diamond Grit #50/60; Triangle Shank; Handle diameter 10mm 【Application】Dry or Wet drilling Ceramic Porcelain Tile Ceramic Granite Marble Artificial Stone Quartz, etc. Wet using will prolong the working life 【Cooling Wax】The inside of drill bits are filled with cooling wax, 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】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