Quick, integrated 4-stage sharpening system with universal knife compatibility, providing a seamless transition from base sharpening to precision refinement for optimal edge performance. Ergonomic, non-slip handle for comfortable control; designed for seniors and beginners with intuitive handling and no prior experience required. Precision sharpening: achieves a mirror-like finish with fine-grain surfaces; coarse-grain side reshapes edges. The double-sided whetstone construction ensures efficient restoration of the optimal cutting angle for consistently sharp results with every use. Broad blade compatibility and performance: sharpens ceramic, carbon steel, and stainless steel knives for all kitchen tasks. Use scenarios: - Vegetable prep: quickly restore a dull chef’s knife for effortless, fast chopping. - Meat and poultry prep: maintain clean, precise slices with a consistently sharp edge. - Everyday maintenance: refresh utility and paring knives to extend their life and keep cooking tasks efficient.