1. Material: HIPS 2. Suitable for a variety of knives, comprehensively solve the problem of sharpening (ceramic knives/serrated knives are not suitable) 3. Special grinding holes with scissors to meet daily needs 4. 4-stage stainless steel speed grinding, sharp in 5 seconds 5. V-shaped sharpened knife groove to fit the knife body 6. The bottom is non-slip, safe and stable 7. Can be operated with one hand, comfortable to hold 8. Weight: 138g 9. Dimensions: 205x65x38 mm