Safe & User-Friendly: Ergonomically designed handle and non-slip pads at the bottom ensure a secure grip and prevent sliding. 3 in 1 Design & Gift: Featuring with different sharpening head for cost-effectiveness. Tungsten steel for coarse grinding, diamond slot for fine grinding, and ceramic slot for precision grinding. Sharpen your dull knife in seconds, making it as sharp as new for easy cutting of vegetables, fruits, meats, and more. Usage Instructions: Insert the knife vertically into the sharpener's mouth, and gently pull it in one direction several times (avoid back-and-forth movements) to effortlessly restore sharpness. To clean, simply press and hold the groove for easy removal after use. Confident Purchase: Trust in our product quality. For any dissatisfaction or feedback, reach out to us via our seller service, and we'll promptly address it. Versatile Compatibility: This sharpener works with most straight knives. Please be aware that it is not suitable for use with ceramic or serrated knives.