Refill cartridges are a great way to keep your writing instrument filled with ink without having to deal with messy liquids or converters. Just puncture the ink cartridge by pushing it into the body of your writing instrument. They are a wonderfully modern innovation that allows you to keep your writing instrument always moist and ready. It's easy to use them, and this article will take you through the process.
The first step to using a refill cartridge is to identify the opening. You can usually identify the opening of an ink cartridge by noting a cup-like rim on one end. Sometimes you may even see a metal or plastic ball inside the rim to act as a seal for the ink (it will be pushed in when the cartridge is punctured.) The following picture shows a close up of some of our popular ink cartridge refills.