MEtool has developed a 3 Step Super MC Transitional Pad, NEW MC material bond is specially designed for clearing off concrete floor scratches produced by Metal-bond tools. This new 5-dots tool (ITEM NO. SC3) with special MC bond could work very fast and aggressive to eliminate the metal grinding scratches, it is a great transitional tool, 3 steps 1#, 2#, 3# are available for now , and diameter 3 inch is recommended.