High quality diamond Grit #50/60 and vacuum brazed tech. provide smooth drilling and great finishing
Used on angle grinder,Wet or Dry using , the recommend speed is 6000RPM. If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank...
ATTENTION: This is not a core bit for drilling. It doesn't make holes but it shapes the hole cleaning and reinforcing the borders when the borders are chipped or need to be clean; Reduce the contact surface, tilt moderately, do not press directly with force, shake slowly and slightly along the force, and the range should not be too large.