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.