Uni Jetstream Refill Pen Keep your favorite Jetstream pen writing like new with the Uni Jetstream Refill. Engineered with Uni's acclaimed Jetstream ink technology, this refill delivers an ultra-smooth, fast-drying writing experience that has made the Jetstream one of the world's most popular ballpoint pens. Product Details Brand: Uni (Mitsubishi Pencil) Type: Ballpoint Pen Refill Ink: Jetstream hybrid ink — smooth, fast-drying, smear-resistant Compatible With: Uni Jetstream series pens Origin: Japan Why You'll Love It Ultra-smooth Jetstream ink — writes effortlessly on any paper Fast-drying and smear-resistant — great for left-handed writers Extends the life of your Jetstream pen Authentic Uni quality from Japan Don't let a dry pen slow you down — the Uni Jetstream Refill keeps your writing smooth, clean, and consistent every time.