DMT 3-In. Dia-Sharp® Credit Card Diamond Sharpener, 3-Pack is the solution for all your portable sharpening needs. This convenient kit includes three compact sharpeners designed to fit easily into your pocket or wallet, making it i for on-the-go use. Each sharpener features a micronized monocrystalline diamond surface that enables faster and easier sharpening without the need for oils. The set contains a coarse diamond stone to restore a neglected edge, a fine diamond stone to hone a razor-sharp edge, and an extra-fine diamond stone for polishing and refining after sharpening. To keep things organized, each stone comes in a color-coded vinyl carry case, ensuring you know which sharpener to use. Model Number: D3EFC