Introduction The Uni-Ball Air Micro collection offers a precision writing experience, with a modern and lightweight design. They are often favoured among students and professionals, ideal for use at home, in the office or classroom. Key Features The Air rollerball pens are manufactured with a cylindrical plastic barrel and an ergonomically designed cone-shaped tip. The writing point is made from tungsten carbide, which is held in place by a plastic surround. This combination of materials creates a smoother and more consistent writing experience, which also prevents muscle fatigue when writing. Tips and Tricks Black pens are most commonly used by professionals as the ink colour is considered neutral. It is also the most effective colour when scanning documents that have been signed or annotated. Blue pens are most often used for note writing, ideal for general purpose activities.