Keep your chef's knives truly sharp with this patented two-stage sharpening professional knife sharpener with precise flexible spring guides, power motor, and cleaning system abrasive disks. This Chef's Choice 325 Diamond Hone Electric Professional Knife Sharpener features two-stage sharpener for straight edge and serrated knives with 100% diamond abrasives. With a patented precision guide for accurate control of the sharpening angle and foolproof results. NSF Certified and ideal for small commercial kitchens. This product measures 4.5 inches tall, 4.5 inches wide, 8.4 inches deep. Heavy duty for high volume users, 2-stage, NSF Certified, Designed for Western edge 20 degree class knives. Assembled in USA.