DT DIATOOL Diamond Drill Bit 25mm Laser Welded Hole Saw for Hard Granite Marble Stone Concrete

1 piece 25mm laser welded diamond drill core bit Diameter: 25mm; Total Length: 102-105mm; M14 Thread for Angle Grinder Dry or Wet drilling hard granite marble all mature stone concrete - use wet will greatly prolong the segment life Laser welded technology avoid segments off when dry working; Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities Vacuum brazed side protection offers clean cut & steel core protection (inside and outside both, 20mm & above ), Manufacturer: DT-DIATOOL