Lansky 4-Stone Deluxe Diamond Controlled-Angle Sharpening SystemThe Lansky 4-Stone Diamond Controlled-Angle Sharpening System Features:Monocrystalline DiamondsExtra Coarse Silver Hone: (70 Grit Diamond) For Re-Profiling The Bevel GrindCoarse 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 HoneAll Lansky Knife Sharpener Systems Also Include:Extra Long Knife Clamp Screws For Thicker BladesStorage/Carrying Case To Hold All System ComponentsComplete Easy-To-Follow Multi-Lingual InstructionsFour Sharpening Angles: 17 Degrees, 20 Degrees, 25 Degrees And 30 Degrees.