sentences:  Die grinder
  
  Die grinders and rotary tools are handheld power tools used for grinding, sanding, honing, polishing, or machining material (typically metal, but also plastic or wood).All such tools are conceptually similar, with no bright dividing line between die grinders and rotary tools, although the "die grinder" name tends to be used for pneumatically driven heavy-duty versions whereas the "rotary tool" name tends to be used for electric lighter-duty versions.