The DMT Mini-Sharp Knife Sharpener is compact and lightweight enough to take anywhere. The Mini-Sharp sharpeners are excellent tools to bring on camping trips or anytime you are out in the field. The easily packable stones all feature DMT's interuppted diamond surface and measure 2.7" long; short for sure, but they provide enough surface area to touch up a blade in the field and take up next to no space in a pack or even in a pocket. DMT diamond abrasive surfaces require no oils when being used. Run them dry or with water if you prefer. All DMT Mini-Sharp Sharpeners come with a keychain swivel and split ring attached to their color-coded polymer housing. Size: 2.7" x .94" x .19"Grit:Extra Coarse: 220 Mesh (Black)Coarse: 325 Mesh (Blue)Fine: 600 Mesh (Red)Extra Fine: 1200 Mesh (Green)