Designed to give your blade a professional, razor-sharp edge every time, regardless of your sharpening ability. Ideal for beginners and advanced users alike. The original and legendary Controlled-Angle System is the ultimate in Knife Sharpening technology.

The Lansky Controlled-Angle Sharpening Systems allow the user to select the sharpening angles that are best suited for their knife's intended use. The four sharpening angles and their usage are listed below:

17° Angle - A severe angle recommended for razor blades, fillet knives or similar tools. An extremely sharp but delicate edge.
20° Angle - A commonly used angle for higher quality blades and offers an excellent edge for kitchen cutlery and slicing knives.
25° Angle - The recommended angle for most knives that need a durable, sharp edge. Perfect for hunting and outdoor knives.
30° Angle - An outstanding angle for knives that cut cardboard, rope or carpets. Best for heavy-duty use.

The Lansky Universal Controlled-Angle Sharpening System features:

Serrated Medium Hone: for sharpening serrations
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 sharp
Honing Oil: Specially Formulated for sharpening
Easy to use, multi-angle clamp: to hold the blade securely
Guide Rods: One for every hone

All Lansky knife sharpener systems also include:

Extra-long knife clamp screws for thicker blades
Storage/carrying case to hold all system components
Complete easy-to-follow multi-lingual instructions

See in the official website: https://lansky.com/index.php/products/universal-system/