DESC: the model 1520 is the worlds most versatile sharpener. designed to sharpen asian european and american style knives you can restore and recreate both a 15 degree angle on your asian style knives and a 20 degree angle on your european and american style cutlery. engineered to provide astonishingly sharp edges using highly precise knife guides that automatically position the knife it is an easy to use must have sharpening system. the multi-stage model 1520 features 100 percent diamond abrasives and patented flexible stropping/polishing discs that create a gothic arch edge structure recognized for incredible sharpness and durability. it will quickly and easily sharpen virtually all quality cutlery including american european or asian style household knives; fine edge or serrated blades; santuko and traditional japanese style single bevel edges including the thicker deba style blades; as well as sports knives and pocket knives. assembled in the u.s.a.