1、DURABLE ABRASIVE: The grindstone is made of natural iron free abrasive, with high hardness, abrasion resistance, impact resistance and non friability. 2、NON SLIP BASE: Equipped with non slip base, the sharpening stone will not slide at will during operation, ensuring safe and reliable sharpening. 3、WET SHARPENING: The knife grindstone is used with water, not with oil, no need to soak in water before use, just sprinkle water on the surface. 4、WIDE APPLICATION: The sharpener can be used for various blades, such as fillet knife, sushi knife, pruning shear, straight shaving blade, scissor, etc. 5、HIGH EFFICIENCY: The knife whetstone is very suitable for use with a fixed angle grinder, greatly improving the working efficiency, with good stability.