1[Double Sided] This sharpening stone features a double sided design for versatile use. One side is rough grinding, which can quickly repair blunt knives, the other side is fine grinding, used to polish the blade and maintain its sharpness. 2[Premium Material] Made from premium white jadestone, this sharpening stone offers excellent hardness and durability, ensuring long lasting performance. 3[Compact and Portable] With a size of about 10 x 5 x 1cm, this sharpener stone is compact and portable, making it convenient to carry for outdoor activities or traveling. 4[Multi Functional Use] Our knife sharpener is suitable for different types of knives, such as kitchen knives, fishing knives, etc. 5[Professional Sharpening Tool] Our 8000 grit double sided sharpening stone can quickly recover the sharpness of your knife and improve work efficiency.