The EdgeTek 6.5" sharpeners offer an easy carry sharpener with a 100% diamond coated surface and oval contour for sharpening a wide variety of blade edges. This line offers the following products: A single sided medium grit diamond sharpener and a dual-sided sharpener with a coarse and medium grit. Each one is lightweight and perfect for carry in a pack or storing in a toolbox. Each sharpener is designed to handle a variety of blade geometries.