ENZO ENGLAND Ceramic Knife Sharpener Double Sided Fine Kitchen Knife Sharpening Stone Whetstone Portable Abrasive Sharpening Tool

I have various knives and have used diamond rods and also V shaped, pull through sharpening tools, which create a fixed angled edge using both carbide and ceramic rods. These pull through tools tend to wear out quickly, due to the small surface area that is used to create the sharp edge. My knives have never been that sharp and have never been good enough to cut a sheet of paper cleanly. This product is to be used after the correct knife edge has been created to a fairly good surface finish i.e. fine. I used this very fine ceramic block on my knives as soon as it was delivered. I was expecting it would take 30 minutes to get a proper sharp edge on a typical knife. I was surprised it was a lot quicker than that. Now my knives pass the paper test. Also, not only are there the two large surfaces of the block to use, there are also the thinner edges, which I have also used on concave curved knife edges and serrated edges too. The block does not stay white very long. The black powder is the microscopic particles of metal from the knife edge. Soapy water can clean this off pretty effectively to use again and again. Just don't drop ceramic sharpeners as they are brittle and very hard by nature and may shatter. Very impressed by this product. As it is small, one has to be careful as your fingers get close to the knife edge!