Mac recommends that Mac knives only be sharpened with a Mac sharpener and this Mac Rollsharp Knife Sharpener is the easiest and most foolproof method of sharpening and preserving your Mac cutlery.

Mac knives are known as some of the sharpest knives & are endorsed by some of the top chefs in the world, including Thomas Keller, Charlie Trotter, Nobu Matsuhisa, Eric Ripert and more. Mac knives very sharp, razor-like edges for easy slicing, they're hard so they stay sharp longer (Rockwell 57-61), are well balanced and are a good value. Mac Knives have a 25 year limited warranty from the manufacturer.