C-CLIP Knife Sharpener can be used to sharpen knives, fishhooks, darts, arrowheads, tools, needles, surgical-type tools, and more. At home, camping, fishing, hunting, boating, at work—The C-Clip is the most convenient solution. The “Mini” Knife Sharpener can be carried on its keychain, on a belt hook, or like loose change in a pocket. You can keep this sharpener with you all the time. It's more than a ceramic rod cleaner! Eraser Block works right out of the package to keep your ceramic rods clean and sharpening at peak efficiencyand it can erase hard to remove stains and spots on practically any surface, including sports equipment!