The Smith's 10 Second Knife Sharpener JIFF-SFB has been specifically designed to make sure you have the best possible edge on your favorite knife or pair of scissors. This Sharpener from Smiths features a specially designed "V" 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 on the Smith's 10 Second Knife and Scissors handheld Sharpening System are pre-set so that you get the correct sharpening angle every time. They are also reversible for extended life and replaceable. The Smith's Scissors Sharpener features a specially designed "FLOATING" round ceramic rod, which conforms to the exact angle of your scissors every time. It works on both left- & right-handed scissors. With the Smith's JIFFSFB 10 Second Knife and Scissors Sharpener just three or four strokes is all it takes to put the edge back on your blades.