Core Selling Points Module Widely compatible with multiple models such as Epson R1390, L1800, and P408, it is suitable for various home and commercial printing needs The built-in spring structure for stable ink supply balances the pressure, effectively preventing ink breakage or leakage The high-strength multi-layer precision filtration system prevents impurities from entering the nozzle and protects the service life of the equipment Corrosion-resistant and aging-resistant, made of high-quality PP material, suitable for UV and solvent ink environments Easy to install, plug and pull, no need for professional tools, saving maintenance costs Installation Instructions Turn off the printer power and open the ink cap. Gently pull out the original ink sac and clean the interface; Align the interface of the new ink sac with the hose and insert it. Secure the snap fasteners and ensure their sealing. Turn on the printer and run the cleaning program 1-2 times.