The first choice for the daily maintenance of your knives: The surface coating of the sharpening steel consists of very fine diamond particles (grit 600, 23 microns). The level of accuracy of the sharpening steel is very ideal for routine maintenance of the cutting edge of your knives or other tools. When you need the sharpness from the scalpel level, you can use this level to prepare for further sharpening. A sharpening steel suitable for all kinds of materials: because diamond is the hardest material in nature, it is able to sharpen all kinds of hard tools, which other sharpening materials such as ceramics, hard alloys, etc. cannot. Safe And Easy To Use: Stainless steel guard ring is included to effectively protect your hands attached to the handle of the sharpening steel. The ergonomic design ensures a comfortable grip. And the oval sharpening rod makes the sharpening process easier and more efficient than the other knife sharpeners or knife sharpeners.A Stainless Steel Sharpening Steel With Nickel Coating: The sharpening rod is specially coated with a nickel coating, which can effectively protect the product from rusting.