These nibs all have an engraved design which is specific to that model, as well as the fit itself. Parker nibs are not interchangeable and will onyl fit the specific model they were designed for. All Parker nibs are made from different materials from solid gold to stainless steel, and unscrew from the pen in different ways. We are experts on nibs for parker pens so if you have any questions please feel free to get in touch.
The 23K gold nib section for the Parker Sonnet fountain pen.