Used for enlarging holes, making oval holes or other adjustments after drilling into Porcelain, Marble, Granite & Travertine wall & floor tiles and many other surfaces.
 

• Revolutionary new design that requires no water
• Use an angle grinder Max RPM 6000-11000
• M14 thread
• Grinding grain medium 50-60
• Adapter available that converts M14 thread dry drills for use in standard 3-jaw drill chucks