The sharpening stones are made from professional grade natural stone, which is quite wearable. It is used to grind and hone the edges of steel tools and implements. Stone is flat for working flat edges, and is available in 2 different grit sizes. Choose the right sharpening stone for your stoning work. Features: Fine quality whetstone ensures nice sharpening results and long service life. This sharpening stone is small in size, portable and convenient to sharpen more effectively. Suitable for most grinding operations: kitchen tools, shears tools, straight razor, scissors, cutter, garden tools. Made from professional grade natural stone, which is quite wearable. Specifications: Color: black Grit: 320# Item size: 180 * 60 * 25mm / 7.1 * 2.4 * 1.0in Item weight: 300g / 10.6ounce Package size: 180 * 60 * 25mm / 7.1 * 2.4 * 1.0in Package weight: 300g / 10.6ounce Packing List: 1 * Whetstone