Never run out of ink with JETSTREAM RT Retractable Ballpoint Pen Refills from uni-ball featuring a 1.0mm medium point. Rated the best pen for everyday writing, these pen refills contain unique hybrid ink that delivers the smoothness and vibrant color of a gel pen with the quick-drying properties of a traditional ballpoint. Medium ballpoint JETSTREAM RT pen ink dries as quickly as you write, which prevents smudging and smearing to produce neat-looking documents. uni Super Ink technology settles ink particles deep into the paper for protection against water, fading and fraud. The medium point delivers strong, bold lines, giving your documents and signatures excellent readability. Refill Format: Standard Ballpoint; Refill For Series: uni-ball® JetStream™ RT Ballpoint Pens; Refill Ink Color: Black; Color Family: Black.