Smith's 50614 Diamond Tri-Hone with Black Arkansas Stone (8-Inch) For hair-splitting, razor sharp cutting edges on pocket knives, hunting and fishing knives, kitchen knives, sport knives, or woodworking cutting tools Two interrupted surface diamond sharpening stones with a unique Micro-Tool Sharpening Pad and a Black Natural Arkansas stone Coarse diamond stone (325 grit); Fine diamond stone (750 grit); Ultra-fine Black Natural Arkansas stone (approx. 1,500-1,800 grit) Mounted on a triangular shaped base with handles on the end for easy stone rotation and easy to identify stone labels Sharpening angle guide and 1-ounce bottle of premium honing solution included