The Norton India Slip Stones are available in coarse, medium and fine grits. Slip stones are 4 1/2" long by 1 3/4" wide. The large side features a 1/2" diameter and the small side features a 3/16" diameter.
Fine Grit: Norton Item #FS44, Part No. 61463687175
Medium Grit: Norton Item #MS44, Part No. 61463687180
Coarse Grit: Norton Item #CS44, Part No. 61463687185