DT-CW-7-PCD-12SEG-T Threaded 7 Inch 12 Segment 1/4 Round PCD Concrete Grinding Cup Wheel Grinding, Preparation, & Removing Coating

If you are taking Epoxy or Thinset a PCD wheel is a MUST.. Issues with PCD only is if you aren't careful you can gouge the concrete and create more work in filling or grinding out the gouges. These have the other inserts inline so it does a Great job of taking off the Material but reducing the gouging and also provides a nice grind.