A handy little sharpener that can be throw in a pack or tackle box. It is shaped like a traditional steel, but is only about 4 inches in length and folds up into its own handle. The sharpener is made from a diamond coated steel that allows you to touch up a knife's edge very quickly. Also because of it thin diameter it allows you to sharpen serrated knifes that tend to be more difficult to get at. You could also use this to sharpen a guthook or even touch up a fishhook. This will be one of those piece of equipment that I can always find room for in my gear box.