Safe and easy to use, the Gatco Double Duty Sharpener incorporates both a ceramic and carbide sharpener which are preset at precise sharpening angles. For quick sharpening of dull blades, slide your knife through the carbide sharpener. To really hone your edge, turn the sharpener over and use the preset ceramic rods. Heavy-duty polymer construction with slip-resistant rubber grip pads. A built-in key-ring hole makes this compact device easy to carry around.