Take your sharpening anywhere with the ready-to-go Dia-Sharp® credit card sized diamond sharpener. They fit easily in a pocket or wallet. Each comes in convenient vinyl color-coded carry case. Each stone measures 3-1/4" x 2" x .05".
This kit includes the following three grits:
Coarse diamond (45 micron / 325 mesh) to quickly restore a neglected edge
Fine diamond (25 micron / 600 mesh) for a razor sharp edge
Extra-Fine (9 micron / 1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond.