Serviceable and : these 5 different types of knife sharpener stones are made of quality emery abrasive, wear , not easy to rust, sturdy and , not easy to deform, and the diamond whetstone has a faster speed than the traditional whetstone. Good workmanship: these angle diamond sharpening stones are designed with a simple and generous shape, and the edges are smooth and neat, without scratching, non-slip and astringent, designed to improve overall durability and sharpening effect, improving work efficiency. Convenient to apply: these diamond whetstones with a non-slip base, and you do not need to add water or oil when sharpening , and portable, which are convenient to carry or apply in . 5 Grit types: there are 5 different types of grit 240, 320, 400, 600, and 1000, which the rough grinding can be applied to repair the severely passivated knife, and fine grinding can be applied for trimming, consolidating, so that you can choose the right whetstone to apply according to your needs. Wide range of applications: these diamond sharpening stones with non-slip base are suitable for most kitchen knives, which can be applied for grinding, scissors, chisels, plane irons and so on, and you can share with your family and friends. Colour: silver Material: diamond Package Contents: 5 * Polished whetstone bars (240/320/400/600/1000 meshes 1 each) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.