So you've finally upgraded to a machined pen for your everyday carry. It's built like a tank and handles like a dream. Now, the next step to having an awesome writing experience in your day to day is finding the right refill to put in it.
Machined pen makers, especially on Kickstarter, love bragging about how many different refills their pens can accommodate. While the Fisher Space Pen and Pilot G2 refills are the most popular, there are hundreds more to choose from (yes, really).
Since you can only use one refill at a time, I'll help you find your go-to with this guide by comparing the three types of ink refills and recommending the best ones to pair with your favorite EDC pen.