uni-ball UB-188-L Air Rollerball Pens - Premium 0.7mm Medium Tip for Smooth Writing, Fountain Pen Feel with Fade & Water Resistant Liquid Ink - 12 Pack Black Ballpoint Pens for Office, School & Journaling

Enjoy the feel and elegance of a fountain pen with the security of a roller-ball and none of the leaks with the Uni-Ball Air Medium. The Air’s metal ball is held in a plastic surround, allowing the ball to move without friction when the rollerball pen is held at an angle. The ballpoint pen is filled with Uni-Ball Super Ink, an advanced ink formula that bonds to paper fibers. The ink is resistant to chemicals that wash dye-based ink from checks. Super ink is also fade resistant, water resistant, and acid free. Writing with light pressure will give a finer line as ink is transferred by the ball itself, whilst firmer pressure allows the ink to flow freely around the ball for a thicker line. The average line width is between 0.355mm and 0.55mm when varying with the pressure applied, making the pen perfect for writing or calligraphy. The pen also offers a sleek, elegant look and feel that is comfortable and easy to grip. The capped top stays put and ensures that this pen will never leak in your pocket. Black Ink in a Box of 12

Freedom of a fountain pen with the security of a roller-ball with no leaks, the Air’s unique metal ball can move without friction when the pen is held at an angle

Filled with Uni-Ball Super Ink, an advanced ink formula that bonds to paper fibers, fade resistant, water resistant, and acid free, resistant to chemicals that wash dye-based ink from checks

Light pressure will give a finer line as ink is transferred by the ball itself, firmer pressure allows the ink to flow freely around the ball for a thicker line

Average line width between 0.355mm and 0.55mm when varying with the pressure applied, making the pen perfect for writing or calligraphy, black ink in a box of 12

Sleek, elegant look and feel that is comfortable and easy to grip, capped top stays put and ensures that this pen will never leak in your pocket