The 3-Stone Diamond Controlled-Angle Sharpening System ensures that your knife edge sharpens to the exact bevel you specify. Designed to give your blade a professional, razor sharp edge every time, regardless of your sharpening ability; this guided sharpening system is excellent for beginners and advanced users alike. Monocrystalline DiamondsCoarse Purple Hone: (120 grit diamond) for edge reconditioningMedium Orange Hone: (280 grit diamond) for sharpening and less frequent touch-upsFine Gold Hone: (600 grit diamond) for most frequent touch-ups to keep your blade paper-slicing sharpHoning Oil: Specially Formulated for sharpeningEasy to use, multi-angle clamp: to hold the blade securelyGuide Rods: One for every honeN/A