The ubiquitous Parker-style ballpoint refill sets the standard in the pen industry, commonly known as the G2. These refills are widely utilized across a multitude of pens from various manufacturers, with many brands crafting their own versions in this familiar shape. Measuring 98mm in length and around 5.8mm in diameter, G2 pen refills were initially pioneered by Parker for their pens before being embraced by numerous other major manufacturers. Their distinctive elongated tip and plastic end make them easily identifiable. Pens which use G2 refills should be able to use any G2 refill from any manufacturer, if in doubt please contact us for advice.