Take your sharpening skills on the go with the Dia-Sharp credit card-sized diamond sharpener. This compact tool easily fits in your pocket or wallet and comes with a convenient vinyl, color-coded carry case. It is available in coarse, fine, and extra-fine diamond grits, providing pocket-sized convenience. The fine diamond surface ensures a razor-sharp edge, sharpening knives faster than traditional stones thanks to DMT’s monocrystalline diamond technology. No oil is required—sharpen dry or with water for optimal results.