- Designed to enlarge, shape and/or round bevel existing holes in Porcelain,Marble,Granite and Hard Ceramic.
- High quality diamond Grit #50/60 and vacuum brazed tech. provide smooth drilling and great finishing
- 1pc 5/8″-11 male thread to 5/8″-11 female thread Extension Rod for Core Drill Bits
- The shaft is hollow to allow water flow during wet applications
- Used on angle grinder,Wet or Dry using.If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank…