The Dexter 07959 is the ideal tool for keeping your knives and other kitchen tools sharp and longer lasting. This sharpening stone has a fine grit side as well as a coarse grit on the other side allowing for a handy tool that will keep your knives and other kitchen tools sharper and longer lasting. Measures at 8 inches long by 2 inches wide by 1 inch thick. JB8 Combination Grit Stone, 100g Crystolon / 240g Crystolon.