3-stage manual sharpener for super sharp edges on all your knives European/American and Asian Style knives-15 degree and 20 degree classPerfect for Kitchen /Household knives straight or serrated, Santoku, Sports and Pocket Knives100-percent diamond abrasives in stages 1, 2 and 3; Sharpening technology creates double beveled edges that last longerSharpens the entire blade length, from tip to bolster. Sharpens straight edge and serrated knivesEasy to use, right or left-handed. Slip resistant rubber feet hold fast to the work surface.