Knife Sharpener System Constant Angle Grinding Tools Grinder Machine with 4pcs Features Unique design, simple operation and easy to use. It is suitable for various sizes of knives, while protecting your hands from accidental injuries. It is made of stainless steel (including screws), ABS engineering plastics, and high-quality grinding stones (in several different thicknesses and fines, used for rough grinding and fine grinding), which is not easy to rust. The sharpened knives are compatible with sharp, without rough wear marks, and do not damage the blade edge. The set is as follows: 1. One piece of Adanai stone 180 mesh 2. One piece of Adanite 400 mesh 3. A large resistant stone 800 mesh 4. One piece of Adanai stone with 1500 mesh 5. A fiber towel 6. A marker 7. A manual in Chinese and English 8. A camouflage bag 1. of Adanai stone 180 mesh 3. A large stone 800 mesh 4. of Adanai stone with 1500 mesh The sharpened are compatible with sharp, without rough wear marks, and do not damage the edge. 7. A manual in Chinese and English