A Common ‘Standard’In almost every ballpoint pen presentation you will see a reference to a ‘Parker Style’ refill. This refers to an exact shape of the refill tube. Parker established this critical shape decades ago and almost every brand adopted this shape. But what’s in that refill is what matters most.
Gel Ink in Standard Ballpoint Refill, The Parker Gel Ballpoint Refill 2 Pack contains refills which have pigments suspended in water based gel.
Parker Gel Ballpoint Refill 2 Pack
Are refills for pens available or used nowadays? - Quora
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