Used to enlarge, lower or even holes after drilling into porcelain, marble, granite & travertine wall & floor tiles & many other surfaces. Resists tension and cracking after drilling. Facilitates installation of cuffs.
 

• 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