【Professional White Corundum Kit with Precise Dimensions】 The SHAN ZU set includes two separate non-toxic, food-safe white corundum stones measuring precisely 18x6x2.8 cm. The 1000 grit is ideal for basic blade restoration, while the 5000 grit polishes the edge to professional razor-sharp precision 【Water Use & 15° Angle Guide for Simple Sharpening】 Simply soak the stones in water for 5 to 10 minutes before use—no expensive sharpening oil required. Suitable for both beginners and experienced chefs, the included angle guide maintains a constant 15-degree angle during movement, ensuring complete control and safety 【Natural Rubberwood Box & Care Tips】 The handcrafted rubberwood storage box provides elegant and orderly storage. To prevent moisture build-up and mold, it is recommended to air-dry the stones and wooden base completely in a ventilated place before storing them in the box 【Flattening Stone for Proper Surface Maintenance】 With prolonged use, the water stone may wear unevenly. The included flattening stone allows you to easily restore the flat surface of the sharpening stone by gently rubbing it with water to maintain maximum efficiency 【Non-Slip Base & Universal Compatibility for Most Knives】 Silicone non-slip strips and the sturdy base prevent any movement on working surfaces. Perfect for most knives including kitchen knives, Santoku knives, chef knives, kitchen shears, and chisels (Not suitable for serrated or ceramic knives) 【Ready-to-Use Accessory Set for Professional Maintenance】 A well-designed kit for the regular maintenance of any steel blade. Includes 2 water stones (18x6x2.8 cm), a non-slip base, an angle guide, a flattening stone, and a rubberwood box (21.5 x 10 x 7 cm) for a complete and organized solution