Chef'sChoice 415 Exact-V Diamond Hone Manual Knife Sharpener Professional "V-type" manual knife sharpener for straight-edge kitchen, sport, and pocket knives 100-percent diamond abrasives; 2-stage sharpening system; adjustable sharpening force Provides double-bevel durable edges; removable angle guides for conventional "V-type" sharpening Base converts to portable storage box that houses sharpening rods and angle guide; no lubrication required Measures 5-1/2 by 1-7/8 by 8-1/2 inches; 1-year limited warranty