1. A device that removes particulate impurities from the air.
2. Protect or prevent wear on the piston block and cylinder.
3. Prevent large particles from entering the piston and cylinder, causing the phenomenon of pulling the cylinder.
4. Ensure that the cylinder enters a sufficient amount of clean air
5. Extend the life of the car (especially the engine).
6. Aluminum products, no magnetic reaction under the magnet.
7. Spot welding process, sturdy and durable.
8. The surface is frosted out and more fashionable.