The Uniball One F is a slightly improved iteration of the Uniball One pen. It features the same wire clip with ink that is a little bit darker than the original.
The grip is more smooth than the rubberised grip on the original.Unlike general gel ink, the newly developed "uni-ball one" ink uses a new pigment that minimizes the penetration of colour materials into paper fibres.
With darker black and more vivid colours - the Uni-ball One is the perfect pen for left-handers and those that highlight.
Also available in standard versions: