Two features make this type of steel wool a particularly valuable product for woodworking.
First, it is completely free from oil, so it will not mark wood, react to any type of finish, or leave a film on any surface.
Second, it is manufactured in very long strands from top-grade steel and is highly resistant to crumbling. For example, you can use this steel wool for work on the lathe without it pulling apart in your hands.
It leaves less residue and is longer lasting than ordinary steel wool. It comes in continuous 250g (8.8 oz) packages that can be cut to length as required.
The extra-fine grade is equivalent to #000/0000, the fine to #00, and the medium to #1.