This manual knife sharpener has three levels for the best treatment of your knives. The grinder module can be taken off for cleaning or to be replaced. The knife grinder has an ergonomic design, with features such as the non-slip rubber on the underside for secure handling. Suitable for both left and right-handers. You can give any knife the required sharpness with this easy three-phase sharpener, and in no time at all. In order not to damage the knife and to get a good sharpness, pull the knife lightly through the slit at a 30-45° angle. During the first phase, the knife is prepared with a diamond stone to repair damaged edges. The next stage is the actual sharpening of the knife with tungsten steel; the whole knife is then polished with a ceramic stone at the last stage.