BlackHawk M.O.D. Diafold diamond sharpener will quickly sharpen even the hardest knives. It features a fine grit diamond abrasive on one side and a coarse grit on the other. This permanently bonded abrasive works like a traditional sharpening stone, but does not require oil and typically produces better results in a fraction of the time. Perfect for touch-ups in the field, this lightweight sharpener folds to a compact size that fits easily in any kit. This is a must-have accessory for any knife enthusiast.