1,STURDY ABRASIVE: The grindstone is made of without iron abrasive, with high hardness, abrasion proof, impact proof and non friability. 2,NON SLIP BASE: Equipped with non slip base, the sharpening stone will not slide at will during operating, ensuring safe and dependable 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. Item Type: Knife Whetstone Size: Approx. 200 x 75 x 25mm or 7.9 x 3 x 1in (Not Included Base) 1 x Whetstone 1 x Non Slip Base Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.