Rada's Quick Edge Knife Sharpener renews the blades of your non-serrated knives to their original super-sharp status. The process is easy. Simply grip the base with one hand and pull a knife blade between the wheels four to six times with the other hand. Wipe off the blade using a soft towel to remove any metal shavings and you're done. This invaluable tool is inexpensive too because sharp knives shouldn't be a luxury.