Easy to carry and easy to use the combination of 325 grit diamond coating on one side and 600 grit on the reverse side allows the sportsman to quickly sharpen a dull knife edge or put a razor edge on a blade while out in the field. AS an added feature a hook sharpening groove runs the length of the stone. The Dual Diamond Coated Sharpening Tool comes in a nylon ballistic cloth sheath which can be attached to a belt.