- 4-in-1 sharpening system simplifies the entire sharpening process, automatically adapting to different blade shapes with a controlled grit transition for consistent results. - Ergonomic, anti-slip handle with a specially profiled grip guides the sharpener with precision, enabling comfortable one-handed use for seniors and beginners without special knowledge. - Comprehensive edge care with a fine-grain honing side for smooth cuts and a coarse-grain stone for initial edge shaping; the double-sided stones keep knives sharp for dependable daily performance. - Versatile compatibility: precision sharpener for ceramic, carbon steel, and stainless knives; optimizes cutting across a wide range of cooking tasks and kitchen devices. - Use scenarios: - Quick daily maintenance of everyday kitchen knives during meal prep. - Restoring an edge on carbon steel knives after heavy use to regain performance. - Sharpening ceramic knives that require careful, grit-specific care for best results.