Single-sided Diafold sharpener provides convenient, lightweight and portable sharpening for knives, garden and specialty tools and more. Convenient fold and go handles, which enclose and protects the Diafold Diamond serrated knife sharpener when not in use. Coarse diamond to transform a dull edge. Sharpens knives and tools faster than conventional stones with DMTs monocrystalline diamond surface. No oil is needed, sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service.