The Mitsubishi RT Gel Pen is a retractable rollerball pen with black gel ink. Writing in black gel ink, the Mitsubishi RT Gel Pen enables fluid, skip-free writing with fewer smudges and smears. Its 0.7mm tip produces a smooth 0.5mm line. This Uniball gel pen features a unique twin ball system that prevents reverse ink flow and leakages, so you can even write with the pen upside down should you wish! With its comfort grip, this Mitsubishi pen allows easy, tension-free handling and comes with a handy automatic retracting action pocket clip. The Mitsubishi RT Gel Pen is ideal for everyday use at school, home or the office.