Smith's SM51031 Mesa onyx black electric knife sharpener offers quick and precise knife sharpening, a guaranteed correct sharpening angle, and that maintains and extends the life of fine knives. This Mesa electric knife sharpener is a fashion-forward and sleek take on the newest generation of kitchen knife sharpeners. Smith's SM51031 electric knife sharpener features a preset synthetic abrasive sharpening wheels and blade guides which hold the knife at the correct sharpening angle. This knife sharpener has rubber feet for stability and safety and safe to use on all straight-edge knives.