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   BCH is a registered trademark of BCH Technologies LLC, USA, and distributed by licensed resellers listed on www.bchtechnologies.com. Any counterfeit or illegal distribution of BCH products is prosecutable by the law.