Naniwa Advance Super Combination Stone

The Naniwa Advance Super Combination Stone is a high-quality dual-grit water stone for sharpening knives and tools, combining two grit levels in a single stone. This design makes it convenient to complete the entire sharpening process — from coarse metal removal to final edge refinement — using just one stone. Stones from the Advance Super series are made from a high-density abrasive material. Before use, it is sufficient to simply wet the surface with water. Specifications Type: Combination water stone. Size: 8-1/4" x 2-3/4" (210 × 70 × 20 mm). Abrasive material: Aluminum Oxide. Features: Double-sided. Country of origin: Japan. Recommended Use Full manual sharpening cycle: from removing damage and chips to final honing. Sharpening kitchen knives and tools made from carbon or stainless steel. Universal edge preparation for everyday or professional use How to Use Pre-soak or wet the surface of the stone with water. Start sharpening on the coarser side, then flip the stone and move