Precision grinding technology: The precisely ground whetstone guarantees even grinding of all hook shapes, including bait hooks, and ensures longlasting peak performance with every throw. Mobility: Sophisticated carrying concept with a retractable strap and narrow storage profile, adapted to fishing needs for spontaneous sharpening operations on the go without loss of storage space. Efficient design: Thoughtful construction allows for even hook tip grinding for precise results with every throw. Wide application: Precision sharpening tool for all fishing hook types and sizes, ideal for freshwater, saltwater and fly fishing. Universally compatible with single hooks, treble hooks and special hooks up to 5 cm in length. sharpening performance thanks to ceramiccoated grinding surfaces. Use scenarios Freshwater trips: Quickly touch up single or treble hooks between casts to maintain edge for reliable penetration on bass, trout or panfish. Saltwater outings: Keep hooks sharp during long sessions on coastal waters; compact, portable design allows onthego sharpening without sacrificing storage space. Fly fishing adventures: Suitable for fly hooks up to 5 cm; maintain sharp tips across various hook types to improve casting accuracy and hook sets.