Among the first Japanese stones brought to the West were King Water Stones. The #1000/F#4000 Combination by King (Ice Bear) Japanese Waterstones is a high-quality sharpening set designed for professional and hobbyist knives and tools. They are resin-bonded aluminum oxide abrasives. You can go directly from a medium grit to a finishing stone by using the particles, which operate as progressively finer grits. They are an excellent option for sharpening softer tool steels or when the cost is an issue because they are reasonably priced and simply need a brief splash of water before use. It includes 1000 and 4000-grit sides, allowing for sharpening and honing with this combination water stone.