The uni-ball Air Micro pen is similar to a regular fountain pen but without leaks. Unlike other rollerballs, the Air Micro features a ball which can move freely within a plastic surround, resulting in far less friction when the pen is held at an angle. The Air contains uni-ball's fade-resistant, water-resistant and tamper-proof Super Ink. 

The Air Micro will give you a slightly finer line width than the Medium - between 0.25mm - 0.45mm. Writing with less pressure will deliver a finer line as ink is transferred by the ball itself, whilst pressing a little harder on the surface gives a thicker line as the ink is able to flow freely around the ball.

Specification

• Uni-ball Air Micro UB-188-M Rollerball Pen
• Blue ink
• Pen with cap
• Free moving pen tip
• Tamper-proof Super Ink
• Fade-resistant and water-resistant
  
• Line width of 0.25mm - 0.45mm (0.5mm)
• Similar to a regular fountain pen but without the leaks
• Features a ball which can move freely within a plastic surround, resulting in far less friction when the pen is held at an angle