Norton 61463685570 4x1x1/4″ India AO Single Grit Benchstone Fine Grit
Norton Part # 61463685570. Produce a strong, keen, long-lasting edge on all types of knives, plane blades, chisels, scrapers with Norton’s India AO Single Grit Benchstone. Use with oil to enhance the sharpening action and minimize the clogging of the stone’s surface.