Uni-ball ONE F Gel Pen

By Uni Mitsubishi. 

These sleek rollerball pens have a black gel ink line (in either 0.38mm or 0.5mm). The ink is quick drying and fade resistant. 

They have a retractable nib, a metal clip, and come in a gorgeous range of barrel colours. 

They are 14cm long, and the grip is about 1cm wide. 

All pens have black ink. 

Refills available here, in blue or black ink, and with 0.38mm or 0.5mm nib width.