The Uni-ball PROTECH is a one of the most classical liquid ink rollerball pens on the market. The design of the pen is simply elegant like a master piece. The Micro Deluxe pen uses uni Super Ink, which is fade resistant, water resistant and tamper proof. Also, the stainless steel tip provides durability and maintains a smooth flow. Whoever write with this pen will be attracted immediately by the ever smooth writing feeling.