J-Bars, also referred to as pressure bars, are used in lever filling fountain pens where the lever presses against the bar and depresses the sac, activating the filling system. The J spring returns the bar and lever to their rest positions. Often these have become corroded or weak over time.
These reproduction bars are fabricated in-house and are based on vintage designs. Note that this design is thinner than many 2 part bars available minimizing impact on sac sizing.
As we roll out production we will be adding additional sizes based on customer feedback. Custom sizes can be requested through firstname.lastname@example.org.