This professional knife sharpener sharpens both straight-edge and serrated Western-style knives in a matter of minutes. As compact as it is efficient, the high-performance electric sharpener uses an advanced two-stage process to guarantee precision results. Designed for use with German knives. State-of-the-art two-stage sharpening creates "gothic arch" shaped edges, which are stronger and longer lasting than hollow-ground or conventional "V" edges. Stage one sharpens with 100% fine diamond abrasives; stage two finely hones edges using advanced micron-size 100% diamond technology. The precisely formed conical diamond abrasive disks gently apply optimal sharpening pressure, so edges stay in perfect temper. Precision guides automatically position and stabilize the knife during sharpening, ensuring fast, foolproof results. This versatile machine is ideal for sharpening all types of knives, including kitchen, household, sporting and pocket knives. Can be used to sharpen both straight and serrated knives.