This is a set of two diamond whetstones: "Medium Grit #1000" for restoring the sharpness of blades and "Finishing Grit #3000" for a smooth finish. This single set can handle everything from daily maintenance to final finishing. The non-slip backing ensures stable sharpening. 【Product Features】 Ideal 2-Step Sharpening Set #1000 (Medium Grit): Used for sharpening and correcting blades that have lost their sharpness. This grit is perfect for everyday maintenance. #3000 (Finishing Grit): Removes fine burrs (wire edges) after medium grit sharpening, making the blade edge sharper and smoother, and giving it a beautiful luster. High-Hardness Diamond Particle Adoption: Because diamond particles are used as the abrasive material, it can handle not only stainless steel and steel, but also high-hardness blades such as ceramic knives and cemented carbide, which are difficult to sharpen with conventional whetstones. Excellent Work Stability (EVA Foam Base): The entire back surface uses EVA foam material with a non-slip effect. It prevents the whetstone from slipping during sharpening and provides stable support on the table, allowing for safe work without hand tremors. Flatness Maintenance and Durability: While thin, it uses a hard plate as a base, so there is almost no need for "surface correction" that comes with use, unlike conventional whetstones. It allows for sharpening with a stable flat surface for a long period of time. 【Product Specifications】 Type: Diamond Whetstone 2-Piece Set Grit: #1000 (Medium Grit) / #3000 (Finishing Grit) Size (per piece): 150mm long × 62mm wide × approx. 2.5mm thick Back Material: EVA foam (non-slip processing) Condition: New, unused 【Shipping Details】 Shipping Method: Yu-Packet Post / Yu-Packet Post mini (anonymous shipping, tracking service available) Packaging: Waterproof packaging and cushioning material (bubble wrap) for protection during shipping.