The Katana Saya ceramic whetstone features a Medium (1000 grit) and Superfine (9000 grit) edge and is the ideal tool, not only for the everyday maintenance of your kitchen knives but also for taking them to the next level of sharpness. The stone fits snugly inside a sleek, non-slip plastic base with a lid, offering a stable surface for honing kitchen knives of any brand. Also included in the set are a levelling stone for restoring the knife sharpener’s smooth surface as well as a cloth for drying the stone and your work surface after use. Founded in 1945, the award-winning Grunwerg family business produces high-quality household goods and catering products, specializing in high-quality steel. The company is headed by the Grunwerg family, which is located in the steel town of Sheffield. The guaranteed high-quality Grunwerg product range remains the first choice among professionals and renowned chefs in the food industry.