Sharpening are made of 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 honeycomb 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 face and a wider blade for specific 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 gritColour:silverMaterial:diamondSize:about 151x63x1mmPackage Contents:5 X diamond grinding knife stone stone