Smith's SMJIFF-SFB knife sharpener offered, in a clear plastic container which holds 12 "10 second" knife and scissors sharpeners. This scissors sharpener features a specially designed ?ǣFloating" round ceramic rod, which conforms to the exact angle of scissors every time with just three or four strokes is all it takes to put the edge back on scissors. It works on both left and right-handed scissors. Smith's SMJIFF-SFB knife sharpener has a specially designed ?ǣV" shaped sharpening slot with two crossed carbide blades that allow you to put a quick edge on your knife with just three or four strokes. The carbide blades are pre-set so that you get the correct sharpening angle every time. They are also reversible for extended life and replaceable.