The DMT Dia-Fold Diamond Fishhook is a knife sharpener. It has a coarse grit of 325 mesh. It has clear composition folding handle doubles as a sheath for this pocket size 4 1/2" diamond whetstone that is less than 1" wide. Precision milled groove for sharpening fish hooks. Suitable for most any sharpening need. Portable enough to take anywhere.
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