150 Grit XTR Round: For medium to extremely hard concrete. Use after the 80 grit metal to remove scratches. (Extreme Floor Line)
80 Grit XTR Round: For medium to extremely hard concrete. Use for first grinding step on bare concrete or removal of 40 grit scratches from previous grind. (Extreme Floor Line)
40 Grit XTR Round: For medium to extremely hard concrete. Can be used to expose aggregate, remove scratches from 16 grit, and remove thin-mill coatings. (Extreme Floor Line)
16 Grit XTR Round: For removal of coatings up to 12 mils thick. Can be used for the first step in grinding a rough concrete slab.(Extreme Floor Line)