Welcome to ShenMo shop! 4 IN 1 SHARPENER: The unique 4-in-1 design combines the functions of coarse grinding, fine grinding and polishing, and scissor sharpening. Diamond coated grooves are used for blunt metal knives; tungsten steel grooves are used for coarse grinding, most knives can be sharpened in this groove; Ceramic rod grooves are used for edge finishing and polishing. NON-SLIP RUBBER BASE: The non-slip rubber base and handle increase stability and control, allowing you to easily control the sharpener to ensure your safety. SHARPENING METHOD: 1. Coarse grinding: Put the blade vertically into the coarse grinding mouth and push it back slightly about 5 times; 2. Fine grinding: Put the blade vertically into the fine grinding mouth and pull it back gently about 3 times; 3. Polishing: Insert the blade vertically into the ceramic mouth, pull slightly back slightly about 3 times. Only sharpen in one direction when sharpening the knife. WIDE APPLICATION: Suitable for chef's knife, utility knife, paring knife, fruit knife, scissors, blunt knife, bone knife, kitchen knife, etc. 100% satisfaction - Our customers are our priority . If you find any problems with the products after receiving the goods, such as damage and incorrect quantity, please contact us immediately. We do our best to provide you with satisfactory after-sales service.