Unlike abrasive papers and pads, where the coarseness of grits will be more or less the same from one make to another, there is no standard for the coarseness of wire wool. Therefore, 0000 wire wool from one make could be vastly more coarse than the same grade from another make.
The very, very finest of steel wool that we have ever come across is made by Liberon, and for use as part of the finishing process for woods, acrylics and ebonite, other steel wools just cannot compete. In our opinion, Liberon is simply the best there is.