Product Description: The USA made Lansky system is perfect for outdoor sporting, kitchen or workshop knives, and Lansky offers the widest range of accessories available. In production for over 35 years, the Lansky Sharpening System has been the preferred sharpening system for DIY and cutlery enthusiasts worldwide. Angle constancy is the most critical and the most elusive element of hand sharpening - and the Lansky Controlled-Angle System ensures that your knife edge sharpens to the exact bevel you specify. Designed to give your blade a professional, razor compatible with 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 in Knife Sharpening technology. For best results, your strokes should move diagonally forward (towards the guide hole in the clamp) and along a small section of the blade, using the full length of the hone with each stroke. Extra Coarse Black Hone: (70 grit) for re-profiling the bevel grind Coarse Red Hone: (120 grit) for edge reconditioning Medium Green Hone: (280 grit) for sharpening and less frequent touch-ups Fine Blue Hone: (600 grit) for most frequent touch-ups to keep your blade paper-slicing compatible with sharp