The adjustable angle pull-thru knife sharpener has two stages of sharpening for all types of straight edge knives with a grind on both sides of the blade and a fixed-angle slot for sharpening serrated edge blades.It will sharpen a wide variety of knives by simply adjusting the angle of the abrasive components to match the angle of the original factory grind.The serrated fixed-angle slot with crossed ceramic stones is designed to sharpen into the serrations of the knife.Features a soft touch handgrip and non-slip base for stability.Type: Sharpener ToolHandle Description: RubberSharpener Material: Ceramic, DiamondSharpener Type: Fine, Coarse