And Presto! Your knife is now sharper than ever and ready to go protect your loved ones from zombies!

Well, it is easy to use, but maybe not that easy. It does feature dual stage precision angle guides that provide no-guess sharpening, soft-grip rubber handle, and non-skid rubber base (which is important when you're repeatedly shoving a knife through it) so it'll keep you safe, until the zombies find you, at least.