Smith's Diamond Retractable Sharpener features an unbreakable, diamond-coated steel rod, which is specially designed to sharpen all types of knives, including serrated blades. Multiple layers of medium grit, monocrystalline diamonds make sharpening quick and easy, while still giving you that razor-sharp edge on your knives, tools, or hooks. The rod is reversible and can be adjusted to variable lengths. It has a sharpening groove for hooks and a shirt pocket slip for easy storage. The unit is light, compact, and durable. FeaturesREVERSIBLE ROD - Smith's Diamond Retractable Sharpener features a tapered diamond-coated rod to sharpen serrations and a half-round diamond-coated rod to sharpen straight edges.DIAMOND-COATED - This writing pen-size sharpener uses an unbreakable diamond-coated steel rod to sharpen single or double-bevel pocket, sport, or tactical knives quickly and effectively.SHARPENING GROOVES - This sharpening rod includes a sharpening groove for fishing hooks and is coate...