Adopt advanced membrane structure packaging technology to manufacture, absolutely reliable sealing technology to the high stability of the product. Adopt 5μm-level precision filter, excellent ink impurity filtering ability, prevent the print head from clogging, effectively improve the service life of the nozzle and printing fluency. The large effective filtration area of the compact design and the widened and deepened input/output flow channel can handle a wide range of ink flow requirements. The ink sac switch design combined with precise and stable spring force ensures the stability, efficiency and continuity of the opening/closing of the ink sac switch. The integrated special rubber ring design ensures good coupling between the rubber ring and the nozzle cover pin. The rubber ring does not shrink or deform, ensuring that the coupling part does not leak or rebound. Note:due to different production batches, there are differences in printing screen printing, which does not affect the use. It can connect 4x2.5 4x3 5x3 ink tubes. Color:Transparent Material:plastic Package Contents: 1 * ink damper Only the above package content, other products are not included. Note: Light reflection 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.