Norton Round Edge Fine India Slip Stone with fine grit aluminum oxide abrasive. To improve sharpening & reduce clogging, use with oil. Great for sharpening carving tools & gouges. 4-1/2" length  x  1-3/4" width  -  3/8" x 1/8" round edge radius. Oilstone made by Norton, Saint Gobain. Model FS34.
Norton Round Edge Fine Slip Stone 4-1/2" x 1-3/4" x 3/8" x 1/8"