The Norton Combination Waterstone 4000 & 8000 Grit is a high-quality sharpening stone set made by the reputable brand Norton. With one stone made in the USA (8000 grit) and the other made in Italy (4000 grit), this set offers a variety of sharpening options for knife enthusiasts and collectors. The combination of grits allows for precise and efficient sharpening of blades, making it a valuable addition to any collection or workshop.