The Cold Steel Double Sided Knife Sharpener is a folding, sharpener with two diamond coated sharpeners. One side has a 360-grit surface for edge setting and the other has an extra fine 600 grit surface for razor sharp honing. The honeycombed surface allows you to sharpen knives quickly, because the filings are accumulated away from the grit. FeaturesConvex handle for a good grip while you're sharpening your knives or toolsCan be used with or without water360 grit for edge setting600 grit for fine honingDiamond-coated surfaceCompact folding design