The coarse brush is aggressive stainless wire and works well with coarse sieves, say larger than a #4. The Medium brush has brass bristles and works well up to about an #80 . The Fine brush is very soft and will not damage your #100 or #200 sieves.
The coarse brush is aggressive stainless wire and works well with coarse sieves, say larger than a #4. The Medium brush has brass bristles and works well up to about an #80 . The Fine brush is very soft and will not damage your #100 or #200 sieves.