Originally Posted By: Rand
Personally I like the fine one better.
If you need something "heavy duty" there are knotted versions.
Ditto. I've used both. Coarse wheels are too aggressive for what I do. My bench has a fine wheel. I think the wires are 0.008" diameter. That's what you want to clean up threads, mating gasket surfaces, or plumbing. Here in the rust belt I use it chiefly to clean rusty threads.