- HUAERSICO manual knife sharpener with 3-stage system: diamond for coarse sharpening, tungsten carbide for sharpening, and ceramic for polishing - Compatible with most steel knives, both straight and serrated edge (not suitable for large serrated knives) - Ergonomic handle provides a firm and secure grip, reducing effort - Non-slip base ensures stability and safety during sharpening - Compact and portable design, takes up little space and is easy to carry - Includes brush to remove residue and keep the sharpener in optimal condition - Easy to use: simply slide the blade through the corresponding slots 3 to 5 times - Perfect for home and professional use, extends the lifespan of your knives and improves their performance