3 mm Silicone Plugs for Ink Cartridge Refill (6 PCS)

Fits most HP models which uses drill-and-fill method.

6  plugs per package
Outside diameter (OD) is 3 mm. Height: 3 mm.

Used for drill-and-fill method that refills most cartridges.
Drill a hole on top of cartridge, refill then plug the hole
Premium grade rubber guarantees a tight seal and longlife. Easy removevall for refill in the future
Easy removevall for refill in the future

Have you ever wonder how to refill those expensive HP cartridges? Drill a hole on the top*, refill it and seal it with this 2 mm plug. Next time, just unplug and inject more ink.

* Refer to your refill instruction to see if the cartridge is suitable for this kind of refill.