Popular pocket size with a diamond surface for sharpening a variety of knife and tool edges. Convenient folding plastic handles, 9.5"" open, 5"" closed, available in a range of shapes and styles. For professional sharpening, honing and lapping of a multitude of materials including ceramics, composites, fibreglass, glass, stainless and tool steels, stone, titanium and tungsten carbides. The range incorporates worktop, pocket and folding products with colour coded grit identification.