Uni-Ball AIR Rollerball Pens - 0.7mm Medium - 6 Pack - Blue

The Air's revolutionary nib, in contrast to conventional rollerballs, is pressure-sensitive, delivering a writing experience and varying line width akin to that of a fountain pen. The nib's metal ball is encased in acetal plastic rather than the standard metal surround, enabling a smoother ink flow around the ball and increased flow with greater pressure applied. The 0.7mm ball provides a line width ranging from 0.35mm to 0.55mm, depending on the pressure exerted.

Pressure sensitivity is the defining feature of the Air's innovative nib design, setting it apart from traditional rollerballs. By employing acetal plastic instead of the customary metal casing, the nib facilitates a more fluid ink flow around the metal ball, resulting in a writing experience that closely emulates the responsiveness of a fountain pen. The line width variability, spanning from 0.35mm to 0.55mm, is a direct consequence of this pressure-sensitive mechanism, allowing users to effortlessly transition between thin and thick strokes.

This revolutionary nib technology represents a significant advancement in rollerball pen design, bridging the gap between the convenience of a rollerball and the expressive capabilities of a fountain pen. The use of acetal plastic in the nib construction plays a crucial role in achieving this enhanced functionality, enabling a smoother and more responsive ink flow that responds dynamically to the user's writing pressure. With its 0.7mm ball delivering a versatile range of line widths, the Air's nib offers a writing experience that caters to a diverse array of personal preferences and writing styles.

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