![Piper Premium Ink 888 Rollerball Refill](http://www.franklin-christoph.com/cdn/shop/products/888_Blue_Refill_{width}x.jpg?v=1707772663)
This is the most common rollerball refill shape in the world, and is often called the "international standard" refill. They fit many many brands including all Franklin-Christoph and Piper standard rollerballs. [4.39" long]
The medium point puts down a medium to thick line with fluid ink, variable with different paper styles.
The medium point puts down a medium to thick line with fluid ink, variable with different paper styles.