Review on Diameter Micrograin Tungsten Grinding Engraving by Jeff Davidson

I'm not sure who had problems with cutters, but it's phenomenal. I use mine to cut nickel plated holders with a Dremel door assembly tool. They leave very smooth lines, are real carbide (you can tell how heavy they are) and stay sharp for a very long time. I've had mine for a few months now and am still using the first one. Of course, the cuts I make are fairly short, only using the tool for a minute at a time, but it's tremendous value compared to brand name cutters.