uni Uniball Signo RT1 UMN-155 ballpoint pen


Innovative tip design. The tip is rounded and edgeless to reduce friction against the paper, resulting in a super-smooth writing experience. • Simple body consisting of a clicker with clip, and a rubber grip that blends almost seamlessly into the barrel. • Pigmented ink that is water resistant, fraud resistant, fade resistant, acid free, and archival.

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uni Uniball Signo RT1 UMN-155 ballpoint pen

SKU UMN-155 Categories , Tag


1.To reduce the frictional resistance between the pen tip and the paper, the corners at the tip of the tip have been eliminated to achieve a smooth writing feel.
Moreover, the stainless steel tip with excellent toughness and the spring tip mechanism which prevents the direct current of ink are adopted.

2.We reviewed the ink composition and improved the smoothness while maintaining the vividness of the ink color and the feature of being able to draw ultra-fine lines without bleeding.
Uses a dark, non-bleeding water-based pigment ink. It also has excellent water resistance and light resistance.

3.A new design with no noticeable joint between the grip and the shaft. The simple, smooth and flowing shape is attractive. In addition, the entire toe shaft has a rubber grip that is easy to grip.