Three or four strokes and it's sharp!Put a quick edge on your Smith's "10 Second" Knife Sharpener using it's specially designed "V" shaped sharpening slot and two crossed carbide blades. The sharpener features pre-set carbide blades with precise sharpening angles, reversible blades for extended life and of course the blades are replaceable. The unique "FLOATING" round ceramic rod conforms to the exact angle of your scissors every time and works on both left & right handed scissors. Features "V" Shaped Sharpening Slot Proper Sharpening Angle Reversible and Replaceable Carbide Blades Extend Sharpening Sharpens All Types of Knives Sharpens Left or Right Handed Scissors Carbides: Coarse Fine Ceramic: 800 Grit