Norton India Replacement Stone for IM313 Professional Machine the 20" belt can be

the 20" belt can be used on these machines

The handsome wooden box keeps the stone safe when not in use

The Blue #1500 is a slightly finer intermediate stone

That is both the most important question a sharpener can ask

Norton India Replacement Stone for IM313 Professional Machine the 20" belt can beThis 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 Medium and Fine in the Norton India stones? A. The Medium India is 240 grit and the Fine India is 400 grit. Please see our Norton Grit Chart for more information.