Cool Hand 4.5" Tapered Diamond Knife Sharpener Rod with Fish Hook, Gut Hook and Needle Sharpener, Grit 320/600, 2 Packs with Fine and Coarse grits, Easy to Carry, Serrated knife sharpener

Bought these to sharpen my serrated knives and works very well for that purpose. Can't comment on the ability to sharpen fish hooks but I imagine the fish hook groove would be good for sharpening pins , needles & safety pins. The covers are used as the handles for the sharpening rods which make them much easier to use. The process of sharpening serrated knives are very tedious involving angling the rods just at the right angle and stroking through each and every scallop serration in the knife. My 10 inch Victorinox bread knife has a LOT of teeth so it took awhile but the tapered rod did the job. Since the rods are tapered, it was more than large enough to sharpen the large scallops. Likewise, for my small 4 inch long serrated paring knife, the tapered rod tapered to a small enough diameter to sharpen the very small serrations (3 mm ~~ 1/16 inch wide serration scallops). Interestingly, the smaller knife was harder to sharpen than the bread knife because the serrations are so small hence easy for sharpening rod to slip out of the serration. TIP - after sharpening, there will be a burr on the back side of the knife which can be removed by passing the finer rod over the back side. I used a whetstone instead but the fine rod worked too when I tired it. NOTE - these rods are quite small, small enough that when they are in their tubular covers, both will fit into a closed hand.

Muy útil su forma tanto para afilado de filos lisos como aserrados. Lo único por lo que no pongo 5 es porque siento que con el uso en aceros de calidad si se “desgastan” relativamente rápido

I had hoped these would be bigger in length and diameter but these were very small when I opened the package. Smaller than I expected them to be based on the images on the posting. These need to be a little larger in diameter to be able to really sharpen larger diameter serrations like on bread knives, which is what I bought them for.

These worked well on my serrated pocket knives which have higher quality stainless and non stainless steels. Works very well on D2, 154CM, and 14cr28. It didn't suffer damage when I tried it on my M390, Elmax, and ZDP high HRC steels, but it will take some time to take metal off super steels. Best tool I've used for serrates. Recommend for regular to semi super steels.

Loved this diamond sharpener Been look for this design!! Perfect for touching up the tip of your hook for fishing or your knife.