A very efficient, compact, sharpening stone. The DC4 is made by Fallkniven, who produce a serious range of knives and sharpening kit. The DC4 stone is a diamond/ceramic sharpening stone designed to be carried with you in the field within its leather carrying pouch. The diamond side comes in at 25 micron and the specially designed ceramic is made from synthetic saphire, enabling you to get a "shave sharp" edge on your knife. These materials performance actually improves with use and the stone will hold its shape which is vital for sharpening well. We also like these stones as they can be used dry with no other form of lubrication, which makes them an efficient field stone. To sharpen your knife you can use a circular motion or a straight forward slicing motion, they come with full instructions. Size = 10cm x 3cm x 7mm Advantages: No lubrication is required, they are cheap, they can put a shave sharp edge on your knife, they are pocket sized, light, and we like the pouch it comes with to protect it

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