Material: This sharpening rod is designed to ensure greater sharpening efficiency. We use the steel containing many C's and CR's to make the honing rod hard enough to sharpen all kinds of steel knives, including kitchen, household, sport and pocket knives; sharpens standard and serrated knives, you can sharpen your knife anytime and anywhere, it is very portable Fine lines: The lines of the sharpening steel are basically the same as coarse sharpening or fine sharpening on a whetstone. Coarse sharpening can cut metal faster, but the burrs are not durable. Fine sharpening is slow to cut metal, but once it is ground. More durable. Professional chefs sharpen their knives frequently, so they always choose fine lines. Protection of your hand: A stainless steel guard ring is added to the handle to protect your hands. It can be a relief for you to sharpen your knife in a usual posture Easy to use: knife sharpening steel is easier to use than knife sharpening, you can save time and energy in food preparation, no need to worry