- Integrated 4-step sharpening process with universal compatibility enables a seamless transition from basic sharpening to precision refinement for optimal cutting performance. - Easy to use: non-slip handle geometry with an ergonomic shape ensures fatigue-free sharpening and supports one-handed operation; suitable for beginners and all ages. - Durable tool care: combines fine grit for polished surfaces with a coarse-grained whetstone for edge correction; double-sided design allows easy resharpening for extended tool life and reliable functionality in all cutting jobs. - Kitchen helper for everything: easy handling on ceramic, carbon and stainless steel blades; simplifies vegetable cutting, meat cutting and daily kitchen routine. Use scenarios - Revive a dull chef knife or utility knife to restore clean, precise vegetable slicing and even meat portioning. - Maintain blades made from ceramic, carbon and stainless steel for routine daily kitchen tasks with consistent performance. - Quick edge refresh between uses thanks to the double-sided design and one-handed operation, supporting efficient kitchen prep.