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 sharpening needs, such as kitchen knives, carpenter tools, ceramic knives, chisels. All have a design layout for efficient sharpening. EASY TO USE - The sharpener has a non- base for easy control and use. It has a 5.9x2.5 inch and a wider blade for shape tools. 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 portable and easy to in your bag. Thin grinding polishing diamond square knife tool sharpening stone whetstone 400/600/800/1000/1200 grit Colour:silver Material:diamond Size:about 151x63x1mm Package Contents: 5 X diamond grinding knife stone stone Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.