The Chef's Choice XV EdgeSelect Platinum Knife Sharpener - M15 is the new professional 3-Stage knife sharpener combining the strength and durability of the triple-bevel edge with the flawless, ultra-sharp 15 degree EdgeSelect® technology to sharpen both fine-edge and serrated knives. It is the ideal sharpener for converting traditional 20 degree factory edges of European and American household knives into the high performance Trizor® 15 degree edge. The XV™ flawlessly sharpens contemporary double bevel or single bevel traditional Asian-style knives as well. Featuring multi-stages, 100% diamond abrasives and patented flexible stropping discs, the XV™ creates the Trizor® EdgeSelect® edge which helps prolong the life of quality knives by applying a triple-bevel arch-shaped edge that resists dulling longer than conventionally sharpened hollow-ground or V-shaped edges. The 3-Stage process and efficient flexible stropping disks sharpen the edge with minimal metal removal, further helping to extend the life of fine knives. It also features flexible spring guides that provide accurate control of the sharpening angle, for the thickest or thinnest knife blades, ensuring ultra-sharp edges quickly and easily. Three year limited warranty. UL or ETL and Canadian Approval. Assembled in the U.S.A.