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Norton Tapered Round File Stone 4" x 1/2" x 1/4" base diameter. To improve sharpening & reduce clogging, use with oil. Composed of an aluminum oxide abrasive. Oilstone made by Norton, Saint Gobain. Model FF644.
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Product Length Width
Model Norton Taper Round File Stone 4" x 1/2" x 1/4" Base 4" 1/2" x 1/4" FF644