1-3/8" Cyclone Marble Core Bit Vacuum Brazed

TOOLS CAN BE USED ONAngle grinder, drill, air polisher,MATERIALMarble, porcelain, ultra-compactUSEWet or Dry• Cores through the softest marble clean & chip free• Brazed diamonds inside and outside• Cooling slots allows for easier core removal when stuck• Performs wet or dry• 5/8″ – 11 thread