Are you confused about which refills will fit your pen?
Pen refills are available in many different shapes and sizes. Some refills are a standard size complying with ISO Standard 1257 and can be swapped between pens made by different manufacturers.
Whereas others are known as a propriety size pen refill, they are a specific size and shape and will only fit pens made by that particular manufacturer.
In this guide, we clearly explain what are the different types of pen refills and which pens they fit.