4 Silicone Stopper Plugs for CIS tanks with 1 cm Inner Diameter Refill Hole (AS-Stopper-4)
Fits most CIS models which refill holes are 1 cm in diameter (see picture 3)
4 plugs per package (1x Black, 1x Cyan, 1x Magenta, 1x Yellow)
Outside diameter (OD) is 1.25 cm. Those are dual-plugs. The larger end is to seal the refill hole (1 cm). The smaller end should be kept un-plugged during printer operation. The only time you need to use small plug is for shipping the printer.
You need to use this plug to prime the CIS. Here is a detailed article about how to prime the CIS and where you should put the CIS: https://support.bchtechnologies.com/hc/en-us/articles/204852455-How-to-Prime-CIS-Tanks
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