Uni-Ball Pen Air Micro Blue 0,5mm Perfect pens for journaling, card making, scrapbooking and all your projects or notes. Rollerball that writes like a fountain pen. Features a revolutionary acetate plastic tip, which allows you to adjust the width and intensity of writing depending on pressure and angle. 0.5mm ball Pigmented ink, water and light resistant Ink colour: blue. Brand: Uni-Ball.