The NORTON Vintage Combo Grit Crystolon Sharpening Stone 4B126 is a high-quality sharpening stone designed for blades and knives. Made in the United States by the reputable brand NORTON, this combination grit stone features a gray color and is perfect for collectors or enthusiasts looking to keep their blades in top condition. The compact size and included box make it convenient for storage and transport, making it a valuable addition to any collection or workshop.