Set of 4 Whetstones: Double-sided whetstones (#400, #1000, #3000, #8000) for knives, knife sharpening stones, knife sharpeners, medium grit stone, finishing stone, knife sharpening, knife whetstone, sword accessories, bamboo base, rubber base, flattening stone included, for home use, for cooking, for knives, survival knives ‐ Mercari: Shop from Japan