Outdoor whetstone with diamond material for durable, long-term use. - Built from diamond material, this whetstone is robust and designed for extended reliability in outdoor settings. Versatile sharpening and polishing tool - Suitable for polishing and grinding fishing hooks, fingernails, pocket knives and other small blades. Portable diamond stone for easy field use. Pocket-sized performance - Mini diamond stone that sharpens knives or blades quickly with excellent sharpening effects. Compact design delivers strong performance in a small package. Compact and lightweight - Fishing hook whetstone features a compact size and light weight for easy storage without taking up much space. Diamond knife whetstone you can carry anywhere. Use scenarios: - On fishing trips to maintain and sharpen hooks, ensuring reliable gear in the field. - During camping or outdoor cooking to quickly refresh pocket knives and small blades. - In travel or tool kits for on-the-go sharpening and maintenance, using the compact, lightweight design to save space.