Sharpens Knives In Seconds, Even Serrated Knives, Cleavers, Axes, Machetes And Many Other Cutting Tools. Large Ergonomic Handle Fits Either Hand Safely And Securely. Full Length Finger Guard Protects Your Fingers. Sharpening Blades Are Diamond Honed Tungsten Carbide For Years Of Reliable Service. Will Not Rust And Can Be Cleaned With Soap And Water Or In The Dishwasher.