1. Large mesh filter raise the filter capacity, protect the print head from blocking. And make inks flow smoothly, bring the printers excellent performance.2. Large internal metallic filter improves the printer performance and helps prevent ink starvation when printing in high speed.3. The O-ring rubber seal ink pipeline better.4. High quality with good corrosion-resisting, favored cost, long life span. lt can replace the original damper.5. It is made from P.P materials, Environmental-Friendly.Tips: To prevent your print head clogged, you should replace these dampers frequently. The frequency of replacement is set based on the workload of the machine.