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"IF" it is a 6 micron, verify that first, then it has no place for me. It is simply to coarse. If it is 6 micron then take some non-abrasive hand cleaner, like GOOP, and clean it off the paddle strop...

The red paste is rather coarse. The one time I tried it my edge became duller than what it was before. The black is a very fine grit that is slow to cut.

The green I have not tried but if you go...