Chef's Choice 0315101 315 XV Professional Diamond Hone Electric Knife Sharpener, Black, 2-Stage Ideal for sharpening contemporary double bevel and traditional single bevel Asian style knives 100% diamond abrasives for sharpening and honing - guaranteed to never de-temper; For sharpening both, straight edge and serrated blades; Totally safe for quality knives Advanced spring guides for accurate control of the sharpening angle and easy use Advanced flexible stropping/polishing disks for a super sharp, microscopically flawless polished edge 2 (two) year limited warranty; Designed, engineered and assembled in USA