The grey Force pad opens the 5.5in set as its heavy cutting pad. It is a pale grey foam with a hole through the middle, shown in the picture beside a second pad turned to show the black hook-and-loop back. The next step down in cut is orange.
Grey is the heavy cutting pad. Lake Country says it gives the cut expected of a heavy foam cutting pad yet finishes like a finishing pad, and lists it for moderate to severe defects such as swirls, scratches and marring.
Force pads are Lake Country's dense hybrid foam pads. They are 1.25 inches thick with a tapered edge, and the maker designed them with forced rotation polishers in mind, where it found thicker pads easier to use. The backing is 5 inch, so the pad suits a 5 inch backing plate, and Lake Country says a 4 inch plate works too.
After use, wash the pad with a pad cleaner, lay it flat to dry with the backing facing up, and store it dry in a sealed bag or box.
More in Heavy Cut Foam Pads and from Lake Country.