Böhler M390 comes from the Böhler Edelstahl GmbH & Co KG factory in Kapfenberg, Austria. This manufacturer produces types of steel that are incredibly wear and tear resistant. The so-called 'specialty steels'. It might come as quite the surprise, but almost all types of steel as we know them today were not developed as knife steel. Many types of steel were developed for ball bearings or parts in jet engines. The same applies to Böhler M390.M390 is so wear and tear resistant it also properly maintains the shape of the edge. As such a knife made from M390 steel will retain its sharpness for a very long time. This means you don't have to sharpen your knife as often. Not only great because sharpening your knife takes time, but also because it means your knife will last longer. After all, the more often you sharpen your knife, the faster it will wear out. It is not possible to sharpen a blade over its full height: the blade will become too thick behind the edge. This means it won't be as easy to use.
