1. Material: corundum material, uniform particle size, strong grinding force, corrosion resistance, high temperature resistance, durable. 2. Professional accessories: bamboo base to securely hold the knife clamping stone, easier to use knife guide plate to provide a certain constant angle when sharpening. Flattening stone is used to smooth out uneven surfaces caused by repeated use, making them flat. 3. Double-sided whetstone: Wheel whetstones are available in two different grits, which can be clearly distinguished by their color: No. 1000 grits are used to restore edges to their original shape, and No. 6000 grits are fine grits used for precision grinding and polishing. 4. Versatile: whetstones are suitable for most grinding operations. For example, scissors, axes, kitchen knives, outdoor knives, cutting knives, sharpening knives, folding knives, wood chisels, etc. (except serrated blades and ceramic knives). 5.SAFE & EASY TO USE: Unlike other products, the inside of the angle guide is made of the latest silicone, which protects your knives from scratches. The non-slip silicone base is easy to sharpen knives.