 When you're away from your kitchen and electric power and you want to sharpen your knives This guided field sharpener here is by far the best little handy unit that I have I've got them in my pack. I got them in my tackle box First of all the instructions are on the inside So if you ever want to know how to use it the instructions bit right inside here You have the angles here that tell you How to run your knife. There's the smooth side there Then you hone it, then you strut There's a little groove on this honing rod here If you've ever lost a fish and you probably don't know if you lost it because the hook wasn't sharp But wouldn't it be good to know that the hook is sharp so that you have the best chance of Hooking that fish as opposed to losing that fish in the weeds