The innovative and multiple-patented DuoSharp sharpening stone is a precision flat double-sided sharpener with a diamond surface that guarantees consistent and even results with every pass. The 25 cm / 10-inch countertop or bench sharpener features a large, wider diamond surface suitable for sharpening a variety of blades, including scissors, cleavers, specialty knives, plane soles, machetes, and more. This model includes a base for the whetstone. Coarse diamond (45 microns/325 mesh) for quickly fixing a dull edge, and extra-fine diamond (9 microns/1,200 mesh) for polishing and smoothing a razor-sharp edge after sharpening with the coarse diamond. Sharpening with diamonds is fast and easy. No greasy oils are required; sharpen dry or with water. Solid construction for years of consistent performance and reliable service. When maintaining their tools, craftsmen, chefs, and other professionals rely on the outstanding quality and immense versatility of DMT products. Made in the USA.