The Vintage Norton Combination Sharpening Oilstone IB6 is a gray, original stone made by Norton in India in 1977. This ambidextrous sharpening stone is a collectible item for knife enthusiasts and collectors. Measuring 6 inches in length, 2 inches in width, and 1 inch in height, this high-quality sharpening stone is a practical and reliable tool for maintaining and sharpening blades. The Norton brand is known for its durability and craftsmanship, making this oilstone a valuable addition to any collection.