Review on DMT DCKF Diamond Cone Fine by Jump Robinson

Only two stars as only one side is coated with abrasive. Nowhere in the DMT description does it say they only have abrasives on ONE side. Yes, the abrasive is ONLY on the CONVEX side (ie the side that curves up). If you need to sharpen the OUTSIDE of a notch, you're out of luck. Well, while they are great sharpening tools, WHY make something like this that doesn't have abrasive on BOTH sides? Who knows. Maybe they wanted to sell separate sets, one convex and one concave? BUT they do not form a concave set. Instead, buy the "wave" they make. It's cheaper and you have the option of convex and concave sharpening.