12 x Uni-Ball Air Rollerball Pen | With Unique Pressure Sensitive Air-Tip which Adjusts Line Thickness | 0.5mm Fine Point Nib, Black Ink

• Incorporates a revolutionary "Air-Tip" technology – the unique nib of the Uni-Ball Air pen, unlike conventional rollerballs, is pressure sensitive to provide a writing experience and differentiating line width similar to fountain pens but without the leaking!
• Metal ball of the nib is encased in an acetal plastic rather than standard metal surround for a smoother flow of ink and increased flow as further pressure is applied
• Features Uni-Ball's high quality "Super Ink" - water, fade and light-resistant and "Tamper-Resistant" - ink cannot be washed off using chemicals and solutions used to fraudulently modify documents
• This Air Micro pen has a 0.5mm tip that writes between 0.28mm and 0.45mm - ink does not run off or smudge thanks to its innovative formula
• This set contains 12 pens with a white barrel and black ink

The Uni-Ball Air rollerball pen utilises revolutionary technology for a light and smooth writing experience. The pen incorporates a revolutionary "Air-tip" technology - the air-bearing mechanism allows you to write at any angle and vary the stroke according to the pressure of your hand. Its unique Air suspension reduces friction and can be used at any angle. The Air tip adapts for broad or narrow writing. Due to the unique revolutionary technology, this pen writes like a fountain pen – without the leaking. It includes quick drying black Uni Super Ink that is fade resistant, water resistant and tamper proof. Thanks to the innovative formula, the ink does not run off and does not smudge on the paper. Specifications: • Manufacturer: Mitsubishi Pencil Co UK Ltd • Brand: Uni-Ball • Product Type: Rollerball Pen • Barrel Colour: White • Ink Colour: Black • Nib Size: 0.5mm • Nib Type: Micro • Point Type: Ball • Grip Type: Ribbed • Material Type: Tungsten Carbide • Special Feature: Liquid Ink • Pen Dimensions (approximate): 14 x 1.5 x 1 cm (L x W x D) • Pen Weight (approximate): 11g • Quantity: 12