A three-stage knife sharpener with a suction base that grips a smooth counter top, so you can use one hand to hold it and the other to draw the knife through. It has three slots: tungsten carbide for coarse sharpening of dull blades, diamond for a medium grind, and ceramic for fine honing and a polished edge. Draw the blade through each slot in turn from heel to tip with light pressure a few times. A quick way to keep kitchen knives, braai knives and outdoor knives sharp. Suitable for plain-edged knives; not for serrated blades.