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 every knife you own. Tri-Brasive™ includes coarse 320 and fine 600 grit diamond plates to quickly restore a sharp edge, and a fine grit ceramic stone to hone an incredibly keen edge on your knives. Innovative clamp design quickly and safely secures the knife. Sharpening base provides a stable platform for benchtop sharpening. Includes: Included Abrasives: Abrasive Size: Replacement Plates for the Precision Adjust Sharpener: