This stone is the replacement size for the Norton IM313 sharpening system.
The Norton Crystolon bench stones are made of silicon carbide.
Select from Medium and Coarse stones. Stone measures 11-1/2" x 2-1/2" x 1/2".
Medium Grit: Norton Item No. JM6, Part No. 61463685975
Coarse Grit: Norton Item No. JM3, Part No. 61463685980
Q. What are the grits of the Fine, Medium and Coarse in the Norton Crystolon stones?
A. The Coarse Crystolon is 120 grit, the Medium Crystolon is 180 grit and the Fine Crystolon is 320 grit. Please see our Norton Grit Chart for more information.