Ink Colour Blue. Colour Blue. Writes soft like a marker but durable like a roller ball.
eBay
Uni Ball Sleek Elegant Look Air Liquid Ink Fine Rollerball Pen 0.7mm 12 Pieces Revolutionary air-tip releases ink depending on pressure, creating a variable line width. The newly designed tip adjusts to style of writing depending on the pressure and angle.
eBay
We will give you an astounding item with the best price.
eBay
eBay
AIR Micro Rollerball Pens. This set contains fourteen black inked pens.
eBay
The metal ball of the nib is encased in an acetal plastic, rather than the standard metal surround, which allows for a smoother flow of ink around the ball, and an increased flow as further pressure is applied. This set contains four black gel inked rollerball pens.
eBay
Uni-Ball AIR Rollerball Pens Bold Ink 0.7mm Bold BLACK Ink 3pk Uni-Ball AIR Rollerball Pens Bold Ink 0.7mm Bold BLACK Ink 3pk. Made In Japan Uni-Ball AIR Rollerball Pens Bold Ink 0.7mm Bold BLACK Ink 3pk.
eBay
This is the world's first ballpoint pen that can change the line width depending on the writing style and pressure of the pen. If you write vertically or with weak pressure of the pen, the line will be thinner.
eBay