The Katana Saya ceramic whetstone features a Coarse (240 grit) and Medium (1000 grit) edge and is the ideal tool for taking your kitchen knives from extremely blunt to extra-sharp in no time! 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.