IM Parker Rollerball Pen Refill: Emphasize Your Write Refilling the Parker IM Rollerball Pen is quite a simple and basic step; however, it is essential to the smooth and reliable writing experience you’ve grown accustomed to. Moreover, the Parker IM rollerball pen offers superlative performance and an attractive design, while also providing the basic advantages of refilling over replacing your pen. By refilling, you not only save money that you would otherwise spend on buying a new pen, but it is also an environmentally-friendly move that supports sustainability.