What is OD you ask? Olive Drab! The original outdoor color! Great for your hunting bag, workshop, toolbox, glove box and more. The exact same sharpener as our original AccuSharp®, but in a color that calls to mind the great outdoors. 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. AccuSharp® OD Green will not rust and can be cleaned with soap and water, or in the dishwasher. Replacement sharpening blades are available.