The Redi-Edge Single Edge Sharpener sharpens right and left handed single bevel blades. It features Duromite sharpening elements that will give your blades a consistent 20 degree angle. Crafted from military-grade aluminum to provide lightweight, long-lasting durability. The Single Edge Sharpener also features a v-groove sharpener for fish hooks and sewing needles on the bottom edge. The flat back of the sharpener provides a honing surface and will also polish your blades. The thumb groove ensures that the sharpener is easy to grip and keep steady, while the lanyard hole allows you to place it on a keychain for convenient access. The Single Edge Sharpener offers a sharpening surface for fishing hooks, sewing needles, and single bevel blades to accommodate a range of sharpening needs.