This ShearSharp scissor sharpener is an amazing device designed to take the mystery out of sharpening your general purpose scissors, hedge clippers and tin snips. The large ergonomic handle fits either hand safely and securely. The full length finger guard protects your fingers. Sharpening blades are diamond honed tungsten carbide and provide years of reliable use. ShearSharp will not rust and can be cleaned with soap and water and in the dishwasher.