This stone is the replacement size for the Norton IM313 sharpening system.
Select from Fine and Medium stones. Stone measures 11-1/2" x 2-1/2" x 1/2".
Fine Grit: Norton Item No. IM9, Part No. 61463685970
Medium Grit: Norton Item No. IM6, Part No. 61463654214
Q. What are the grits of the Fine, Medium and Coarse in the Norton India stones?
A. The Coarse India is 150 grit, the Medium India is 240 grit and the Fine India is 400 grit. Please see our Norton Grit Chart for more information.