Chef’sChoice EdgeSelect Professional Electric Knife Straight and Serrated Knives Diamond Abrasives Patented Sharpening System, 3-Stage, Metallic Combines the strength and durability of the Trizor edge with the flawless, ultra-sharp 15-degree XV technology. Time Required to Sharpen: Approximately 1 minute for first time sharpening and resharpening approximately 10 … [Read more...] about Our Recommendation: Knife Sharpeners