- Premium Quality: This retractable knife sharpener features a diamond-coated steel rod, ensuring durability and break resistance. Its fine grit allows for efficient sharpening, while the sturdy aluminum housing protects the sharpening rod and keeps your fingers safe. - Retractable & Detachable: Designed in a convenient pen shape, this 3-in-1 knife sharpener is easily portable, fitting comfortably in your pocket, bag, or tackle box. The adjustable length ranges from 14cm to 23cm (5.5 to 9.1 inches), allowing you to customize it for easy storage. - Innovative Design: The half-round and flat surfaces of the sharpening steel cater to various needs, including kitchen knives, serrated blades, and scissors. The dedicated groove for fishing hooks and the conical part of the grinding rod are perfect for serrations and gut hooks, making it a versatile tool for any outdoor enthusiast. - Time-Saving Efficiency: Keeping your knives sharp is effortless with this detachable sharpener. It quickly restores edges, saving you both time and effort in the kitchen. The half-round and flat surfaces ensure compatibility with standard knife edges, streamlining your food prep. - Practical Use Scenarios: Use this sharpener to maintain your everyday kitchen knives for efficient meal preparation. Perfect for anglers, it ensures your fishing hooks remain sharp for a successful catch. It's also ideal for keeping your scissors and serrated blades in top condition, providing a reliable solution for various cutting tasks.