The uni-ball Jetstream pen is often referred to as being the new standard in rollerballs – unsurprisingly! each ballpoint pen is filled with uni-ball's high quality Jetstream ink. What makes this ink unique is its fast drying speed and lighter feel. Jetstream ink reduces writing friction by 40% with a highly lubricating solvent that gives it low viscosity, letting you write as fast as you think! Jetstream ink dries 9 times faster than the standard ballpoint pen, making it smudge-free. This rollerball pen is perfect for left and right handers with the smudge-free ink and rubberized, ergonomic grip. Jetstream ink also has the same benefits as uni-ball's super ink, making it tamper-proof, fade resistant, and water resistant. Create bold lines with a 1.0mm ball, making it perfect for penning letters or writing in journals. The pen tip is retractable when not in use, and the entire pen has attractive stainless steel accents. This set comes with black ink pens in a box of 12.