Smith’s 51446 Diamond Retractable Sharpener – Gold – Reversible Rod – Compact – Knife & Hook Sharpener – Straight & Serrated

This is the coolest sharpening tool I own; and I have a lot. Not only can you sharpen serrations, it has a flat spot on the non tapered that will put an edge on anything to quickly. Use a black marker to cover the edge and set the angle and put an edge on it that you can see as you go. It's also a real fine grit.

Diamond infused sharper that’s the perfect size for delicate work. Great value, design, and easy to use.

Positives:This is a fantastic and very versatile little sharpener that will last a very long time! It’s very well thought out by the fact that it offers pretty much every type of sharpening surface that one could need. It features a tapered rod for sharpening serrations and things like chainsaw blades, or anything in very tight areas. It has a half-round rod that is great for general purpose sharpening that may require either a standard round rod, or a flat stone as well. Finally, it also sports a fish hook sharpening groove. All of these features combine to make a very handy all-in-one package! All that being said, the best part of it all is that they some how many to sell these for less than $10! Most of the time I see them selling here on Amazon (as of Jan, 19’) for just under $8. That’s just awesome.Negatives:There are two really big negative that became really apparent to me after carrying and using this sharpener for a few months. First, I noticed that you have to be a bit careful when sliding the rod back into the handle when putting the sharpener away because there is a tendency to push a little too hard and cause the rod to push the little black plastic end-cap off of the pen body... I found this to be a little annoying but certainly not a deal breaker by any means! You just need to be aware of it, and be sure not to slide the rod back into the pen house too aggressively.Unfortunately, the deal breaker for me was the fact that when the sharpener is not in use, there is about a .25” length of the half-round end of the rod that is left completely exposed and sticking out of the sharpener. At first this didn’t seem like it would be a big deal; WRONG! After carrying this sharpener in the front pocket of my jeans for a month, that little exposed portion of the diamond rod actually abraded a hole in my pocket and caused me to almost lose the sharpener but not for the fact that I felt the sharpener fall down the leg of my pants.This is simply just a poor design flaw in my opinion. You never want to leave an abrasive surface exposed in any way, especially if the product is design to be carried in the pocket as a portable sharpening device. I just wish that Smith’s would redesign this sharpener so that when it’s not in use, no part of the sharpening rod is exposed to do damage when carrying the item. For this reason, I do prefer the design of the EZE-LAP model M diamond rod sharpener, or the Lansky tactical diamond sharpening rod (despite the fact that I strongly dislike pull-through carbide sharpeners and the lansky sharpening rod also sports one). So while the Lansky and EZE-LAP don’t offer as much sharpening versatility as the Smith’s, they are both more well thought out designs when it comes to carrying them in a pocket.Conclusion:As long as you don’t plan on throwing this sharpening in your pants pocket, and you have a safer way to store and carry this sharpener so the exposed portion of the rod doesn’t chew through your belongings, then it’s a great sharpener. It’s extremely versatile, compact, and inexpensive. I think with just a little design tweaking from Smith’s this could be one of the best portable sharpening devices on the market.

Works great, I carry it every where. Keeps all my edc sharp and ready

Holds up well, does the job.

This cut quickly and really has helped me sharpen serrated blades. Very easily carried in a pocket and easy to hold while sharpening knives or other blades.

Excellent sharpening implement for serrated blades or anything else where you want to change the grind. Diamond will work its way through steel with minimal effort and a lot of speed so use caution and be patient.

Could be my technique, but I couldn’t get my gut hook sharpened after multiple sit downs.