Constructed of stainless steel with dual diamond grit surfaces.
4-Inch model has a fine side - 600 grit, and a medium side - 300 grit.
6-Inch model has a medium side - 300 grit, and heavy side - 150 grit.
WARNING: Cancer & Reproductive Harm -
This product may contain chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.
http://p65warnings.ca.gov/
