The Work Sharp Precision Adjust Knife Sharpener is an angle-guided, 3-sided abrasive jig-and-clamp style sharpener that makes manual sharpening faster, easier, and more precise than ever. The Work Sharp Precision Adjust Knife Sharpener is an angle adjustable, three abrasive grit knife sharpening system that delivers precision and repeatability. The 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 restore a sharp edge quickly and a fine grit ceramic stone to hone an incredibly keen edge on your knives. Innovative clamp design quickly and safely secures the knife. The sharpening base provides a stable platform for benchtop sharpening.