The Chef'sChoice 2-Stage Manual Diamond Hone Model 440 from EdgeCraft, assures consistent razor-sharp edges, sharpening after sharpening. It combines two-stage sharpening, precision sharpening angle control and 100 percent diamond abrasives in an easy-to-use design that is safe for quality knives—both fine edge and serrated. The Chef'sChoice Model 440 puts a long-lasting,razor-sharp double-bevel edge on a broad range of knives including kitchen cutlery and household knives, as well as hunting knives, pocket and fish fillet knives. Compact, portable and lightweight, it requires no electricity, no lubrication and is ideal for use in the home, vacation cottage, for camping, hunting, fishing or hiking.