Brand N/A Model YH521 Quantity 1 piece(s) per pack Color Black + red Material ABS + iron Function Widely used in kitchen knife fruit knife chef's knife; High temperature processing high quality tungsten steel ensures sharp blade; Suction cup design which make it anti-slip while grinding your knife; Non-toxic plastic for healthy life; Choose one flat and smooth surface placing the whetstone on it; Firmly press is until there is no air in the suction cup; Grinding forth and back of your knife for several times; Easy operation and instantly make your knife sharp; A must-have in your kitchen. Packing List 1 x Whetstone