Come and see our amazing products. The kitchen knife sharpener has a 3-slot design including rough grinding,fine grinding and polishing grinding. This is to ensure that you always have the right sharpener for the demand at the knife,whether it is grinding blunt knives,daily sharpening knives,or polishing grinding&burr.The rough grinding part of this knife sharpener uses tungsten steel blades,the middle grinding is diamond wheels,and the fine grinding is aviation ceramics. Different materials can meet your different sharpening needs. The body is made of plastic and rubber.It is perfect suitable for bone cutters,slicing knives,small kitchen knives,fruit knives and home used stainless steel kitchen knives. Pls confirm further with us if any query about packing info, inventory status and time schedule.