Angle consistency is the most critical and the most elusive element of manual knife sharpening and the Lansky Controlled-Angle Sharpening System ensures that your knife edge gets sharpened to the exact bevel you specify. Designed to give your blade a professional, razor sharp edge every time, regardless of your sharpening ability. Excellent for beginners and advanced users alike. The original and legendary Controlled-Angle System is the ultimate in Knife Sharpening technology. Extra Coarse Black Hone: (70 grit) for re-profiling the bevel grind Coarse Red Hone: (120 grit) for edge reconditioningMedium Green Hone: (280 grit) for sharpening and less frequent touch-upsFine Blue Hone: (600 grit) for most frequent touch-ups to keep your blade paper-slicing sharpUltra-Fine Ceramic Yellow Hone: (1000 grit) for polishing the edge for a razor sharp edgeHoning Oil: Specially Formulated for sharpeningEasy to use, multi-angle clamp: to hold the blade securely. Guide Rods: One for every honeN/A