This is a Uni Style Fit pen refill of mechanical pencil. Style Fit offers you to choose your favorite body and mix and choose your favorite colors to create your own multi-pen combination. The ink for Style Fit is the same ink of Uni Signo ink. Please note that these are refill ink, so you need a pen body to use them.
* Pen Width: 0.5mm
* More Uni Style Fit series HERE