Ceramaquartz by Estes, formerly 3M, they have an S grade (fine) and a T grade (course).
T grade is what I use. Their black is more of a dark charcoal color.
Ceramaquartz by Estes, formerly 3M, they have an S grade (fine) and a T grade (course).
T grade is what I use. Their black is more of a dark charcoal color.