PREMIUM DIAMOND MATERIAL - These sharpening are made of high quality diamond material and are durable enough to last for years. The high-strength body gives the stone better durability, making it thinner and lighter. Multitasking Knife Sharpener - This set contains 4 different types of grits to meet your various sharpening needs, such as kitchen knives, carpenter , ceramic knives, chisels. All have a design layout for efficient sharpening. EASY TO - The sharpener has a non-slip for easy control and . It has a 5.9x2.5 inch face and a wider blade for shape . Do not put it in the dishwasher or immerse it in water. Sturdy and Drinkable - Due to the increased hardness, the sharpener can be made into a thin and light body. Compared to other stone sharpeners, these diamond sharpeners are very portable and easy to store in your bag. Colour:silver Material:diamond Size: 150 x 63 x 3mm Package Contents: 4 x diamond sharpening plates Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.