StrikeMaster Lazer Ice Fishing Auger Blade Sharpener - Keeping your ice fishing auger blade razor sharp is the most important factor in auger performance. The StrikeMaster Lazer Ice Fishing Auger Blade Sharpener is perfect for touching up auger blades to keep them in tip-top cutting shape. This sharpener features a compact design with carbide sharpeners set at the correct angle for keeping blades very sharp. Please note that this sharpener will not sharpen extremely dull or damaged blades. It is only meant to sharpen blades in good condition. Sharpener does not work with serrated or notched blades. This tool provides a temporary edge to get you through the day and it is not a permanent solution. Blades must be replaced. Prolonged use of this tool can compromise the auger's integrity.