Check the listing for details. 170mmx75mm 180 Grit Diamond Whetstone Sharpener Sharpening Stone Abrasive Tool. Condition: New. Listed at 14.53 USD. Specifications:Total Size:170mm x 75mm / 6.69" x 2.95"(L*W)Thickness: 1mm / 0.04"Grits: 180Material: Diamond, SteelPackage Content: 1pcs x Sharpening StoneDescriptions:Durable diamonds are electroplated onto a steel base. Provide faster and more effective way to sharpen an edge.Can quickly sharpen and hone hard material, such as stone, jade, high speed steel, carbide etc.. Suitable for grinding seal carving cutter, kitchen shears, garden tools.Super flat surface ensures long-lasting even contact with tools, while oil stone and water stone easily wear down with uneven surface.Simply use it dry or with water or sharpening oil. Either way is perfect for sharpening. Please clean and dry the whetstone after use to prevent getting rust.Tips: Add water or sharpening oil can prolong diamond sharpening stone life when grinding.