MaterialThe knife sharpener is made of HIPS + PS, the product is safe and environmentally friendly, and does not hurt the hands. The base is made of silicone non-slip pad, which is safe and practical, and is a good helper in the kitchen. Size65*38*205mm, please allow the error caused by manual measurement. INSTRUCTIONS FOR USEFor slightly blunt knives, use a fine grinding edge, and one-way grinding 5-8 times. For relatively dull tools, use a diamond grinding edge, one-way grinding 5-8 times, and then use a fine grinding edge, one-way grinding 5-8 times. Very dull knives, first use tungsten steel alloy 5-8 times in one direction, then use emery grinding mouth, one-way grinding 5-8 times, and then use fine grinding mouth, one-way grinding 5-8 times AdvantagesPress down to sharpen the knife, which is efficient and labor-saving, the labor-saving. The hand knife is separated, and the girl can easily sharpen the knife. The bottom is non-slip, safe and stable. The v-shaped sharpening groove fits the knife body, and both men and women can use this sharpener very well. ApplicationSpecially designed to meet your kitchen needs, this knife sharpener is suitable for any chef's knife , fruit knife, slicer knife DO NOT USE ON: ceramic knives, micro serrated knives Color: white grey Size: 65*38*205mm Product weight: 0.138kg Package includes: 1pc* knife sharpener