1. Suitable for metal knives and ceramic knives of various materials.2. Grinding ceramic knives is better and faster.3. Diamond material guarantees efficient and refined sharpening effect.4. Precise angle guidance and constant sharpening pressure reshape the perfect blade.Colour: BlackUsing Instruction:1.Please replace a new sharpening head when the original one does not work properly due to abrasion.2. Disassembie,clean and install the sharpening head.(1)Disassemble the sharpening head,rotate the sharpening head clockwise following A,pull out after the rotation stopped.(2)Clean the sharpening head,remove the cover followingB,replace the cover after Pouring sharpening crumbs.(3)Install the sharpening head,insert sharpening head into the body of the Sharp- following C until it is tightened.Package Contents: 1* Sharpener replacement headOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.