The AccuSharp Pro knife and tool sharpener sharpens knives (even serrated knives), cleavers, axes, machetes, and many other cutting tools in about 10 seconds. The large ergonomic handle is made of brushed aluminum and framed in plastic with a matte finish. It fits either hand safely and securely. The full length finger guard protects your fingers. The sharpening blades are diamond-honed Tungsten carbide and provide years of reliable use. The AccuSharp Pro knife and tool sharpener will not rust and can be cleaned with soap and water. Replacement sharpening blades are available..