Professional 3-stage sharpener for super sharp edges on your 15 and 20-degree class knives 100 percent diamond abrasives are used Sharpen straight edge and serrated knives as well as sports and pockets knives Professional sharpener uses advanced CrissCross sharpening technology delivers an extremely sharp edge by using diamond abrasive wheels which sharpen simultaneously for a superior burr-free edge that cuts effortlessly Precise bevel angle control creates ultra-sharp 15 and 20-degree edges Separate sharpening and honing/polishing stages for a razor sharp, arch-shaped edge that is stronger and more durable Features a Soft Touch comfortable handle for an easy and secure grip Comes with 1 year warranty and life-time professional support