Versatile pocket sharpening tool This fishhook file whetstone is designed to effectively sharpen fishing hooks, knives, needles, and nails. The pocket sharpener helps keep your gear in condition, making it an essential companion for fishing trips, camping adventures, or everyday tool maintenance. Its compact size fits easily in a tackle box or backpack, ensuring a reliable sharpener is always on hand. Dualsided functionality The fish hook sharpener offers two grits for adaptable sharpening: 300 grit on one side for coarse sharpening and 400 grit on the other for fine finishing. The dualgrit design covers different needs based on tool condition, allowing quick restoration of dull edges or precise finishing for already sharp tools. The small diamond stone provides consistent results with every use. Efficient grinding groove design The innovative grinding groove configuration enables faster and smoother sharpening, reducing the time needed to achieve the desired sharpness. The groove helps maintain the correct angle and steady pressure during sharpening, which is especially helpful for small items like fishing hooks that require attention to detail. Convenient storage solution This EDC keychain tool includes a lanyard hole for easy attachment to your gear. Attach it to your keyring, backpack, or fishing vest to keep it within reach during outdoor activities and when not in use, making it a practical addition to your camping equipment. Use scenarios 1) On fishing trips to quickly sharpen hooks for immediate use. 2) During camping or outdoor activities to refresh knives, needles, and small tools. 3) At home or in the workshop for fast maintenance of small metal items.