The AccuSharp Diamond Pocket Stone is a dual-sided pocket sharpening stone featuring a 320 grit coarse diamond surface used for more aggressive sharpening, plus an 800 grit fine diamond surface used for honing and finishing. The Diamond Pocket Stone also has a groove used for sharpening all kinds of hooks and darts. The pocket stone comes complete with a handy AccuSharp carrying pouch with a built-in belt loop for convenience. Features: 320 and 800 grit surfaces Includes carrying pouch