Multi-purpose drilling for ceramic tile, porcelain tile, granite, marble……
Special Designed with Hole in both Sides of Drill Bit for fast Removing Stone Chips and Improve drilling efficiency
Dry drilling without water,Use water for longer time
Machine: Anger grinder. lf you want to use electric drill or other machines, you can use SDS or Hex Shank Adapter. Recommended speed 6000RPM, maximum speed 11000RPM.