Schneider Topball 850 Rollerball Pen Refill

A widely-known German brand, the chances are you have used a Schneider or two at some point in your life, given their propensity to produce an affordable and everyday pen. With a long history of producing writing instruments accessible to as many people as possible, their fountain pens in particular prove unique in their own way, without shouting from the rooftops.

This Topball 850 Rollerball Refill comes available in black, blue, red or green. It has a 0.5mm line width, while the ink doesn't dry even without a cap!