It could be used for un-even concrete floors, rough grinding preparation on the floor, or old floor renovation.
2)Medium grits: 50/60#, 60/80#.
It could be used for all kinds of concrete and terrazzo floors, grinding preparation on the floor, or old floor renovation.
3) Fine grits: 80/100#, 100/120#, 120/150#
Could be used for all kinds of concrete and terrazzo floors, find grinding preparation on floor or old floor renovation before
polishing.

Manual for Floor Polishing Pad:
The floor polishing pad is for polishing various curve surface of concrete and stone, using sequence: from rough grit to fine,
finally polishing. The 50 grit eliminate the trowel marks, smooth rough area and expose light aggregate and it is also great for
shaping edges and removing mold lines; The 100 grit will fellow and so on until you achieve a satisfied polished shine;

Step1: #50 for aggressive, coarse grinding.
Step2: #100 for coarse grinding.
Step3: #200 for semi coarse grinding.
Step4: #400 for soft grinding/medium polishing.