Finally, a knife sharpener anyone can use! No more messy oils or stones. In about 10 seconds, you can sharpen knives (even serrated knives), cleavers, axes, hoes, and many other cutting tools. The large handle fits either hand safely and securely. The full length guard protects fingers. Sharpening blades are Diamond Honed Tungsten Carbide and provide years of reliable use. Accusharp will not rust and can be cleaned with soap and water, or in the dishwasher.