The first stage hones each side of the edge with fine 100% diamond abrasives. The second stage polishes the edge Using ultra-fine 100% diamond abrasives. Chef's Choice 210 Hybrid Diamond Hone Knife Combines Electric & Manual Sharpening for Straight & Serrated Knives, 2-Stage, White 4.3 out of 5 stars 445 Chef’sChoice 290 AngleSelect Hybrid Diamond Hone Knife Sharpener Combines Electric and Manual Sharpening for Straight and Serrated Knives with Patented Finishing Stage Made in USA, 3-Stage, Black Hybrid Diamond Hone. The chef’s choice model 316 has two sharpening stages that sharpen the edge at 15 degrees. View and Download Chef's Choice 315S instructions manual online. 315S accessories pdf manual download. Chef’s Choice Diamond Hone Sharpener for 15° Knives Model 316 Designed to put a factory sharp, 15 degree precision edge on all contemporary Asian style knives, Chinese style cleavers and the thinner, traditional single-bevel Japanese blades as well as contemporary European/American style knives: Sharpener For Asian Knives. Chef's choice 463 Pronto manual Asian/Santoku sharpener is the fastest manual sharpener on the market. The 463 includes two stages, one for sharpening and a second for honing/polishing for a razor-sharp, Arch- shaped edge that is strong and durable. 250 accessories pdf manual download. View and Download Chef's Choice 250 instruction manual online. Chef's Choice specializes in electric knife sharpeners for professional and home kitchens. With these sharpeners, the edge of your kitchen knife can be sharpened within 15 to 30 seconds, and you will save time and money by not having to send your knives to be sharpened by a professional.