The most dramatic development in knife sharpening since the discovery of the sharpening stone. A three-stage process with precision angle control that produces unmatched results. Use for all kitchen, household, filet and pocket knives, and it will also do serrated edges. 100% diamond abrasives in stages 1 and 2 and unique stopping and polishing stage 3 for hairsplitting sharpness with unbelievably fast, foolproof, highly durable edges. A professional quality sharpener with amateur simplicity, nationally acclaimed. This is truly a knife sharpener that merits counter space in every kitchen.