Norton 61463687570 Crystolon Machine Knife Stone; Coarse Grit Side For Sharpening and Fine Side For Honing; Feature Groove Around the Middle To Secure Hold; Built For Use in Paper and Cloth Cutting Shops;

Machine knife stones. Designed for use with oil or water. Each stone is individually polished,resulting in a stone of unequalled precision for sharpening the finest tools and precision instruments. The high density of these stones makes them invaluable t