The Work Sharp Precision Adjust Knife Sharpener is an angle adjustable, three abrasive grit, knife sharpening system that delivers precision and repeatability. Sharpening Angle can be easily adjusted from 15 to 30 in 1 increments to sharpen both outdoor and kitchen knives. Tri-Brasive includes 320 grit coarse and 600 grit fine grit diamond plates to quickly restore a sharp edge, and fine grit ceramic stone to hone an incredibly keen edge on any knife. Abrasives are quickly rotated in the Tri-Brasive handle and are individually replaceable if they get worn or damaged. Innovative V Block Clamp design quickly and safely secures the knife and can be removed from sharpener when inserting or removing a knife to increase safety and comfort. V Block Clamp indexes 180 when sharpening at the push of a button to create symmetrical bevels on both sides of the blade. Sharpening base provides a stable platform for benchtop sharpening and is optional to useideal for benchtop sharpening, but sharpener can also be used in hand without the base if you are out in the field. Sharpening Rod is secured with a magnet and is easy to install or remove when sharpening. The Precision Adjust Knife Sharpener provides superior repeatability, adjustability and performance over other similar sharpening systems. No water or oil is required, making sharpening faster with less set up and clean up. Now you can sharpen your edges to the precise angle you want and re-sharpen them with ease and consistency. This sharpener is supported by Work Sharps world class customer service and 3 Year Warranty.