Materials: Diamond ground tungsten carbide blades feature blades made from one of the hardest materials known to ensure years of reliable use.Long service life: The knife sharpener's blades can be reversed, extending their service life. The garden tool sharpener will not rust and is easy to clean with soapy water.Safe to use: Comes with a full-length guard to protect your fingers while sharpening. Suitable for right- and left-handed people.Easy to use: Don't apply too much pressure when resharpening, but if your blade is dull, pull hard across it and you'll feel it remove material and create a new edge. You can sharpen most blades to like new in just two or three swipes.Suitable for Garden Tools and Kitchen Knives: Designed to sharpen all garden tools such as lawn mower blades, pruners, branch shears, hoes, shovels, sickles, etc. It can also be used to sharpen kitchen knives.