1.Use Our sharpener features a doublesided hook file, which is excellent for polishing fishing hooks. A simple polish is enough to keep your hooks consistently sharp for optimal performance. 2.Easy to carry Pocket fishing hook sharpener with a hole for a keychain to attach to key rings or equipment bags, making it conveniently accessible during fishing trips. 3.Doublesided sharpening Features a doublesided design with three grooves; two coarse slots (400 grit) for quick sharpening and a fine slot (800 grit) for a smooth finish, allowing you to effortlessly maintain sharp hooks. 4.Material This hook sharpener made of diamond material ensures excellent performance without particle loss and is a reliable tool for all your fishing needs.