Uni-Ball Vision Elite BLX Rollerball Pen - 0.5 mm Pen Point Size - Blue, Black Ink - Dark Gray Barrel - 1 Each Rollerball pen delivers skip-free writing Ideal for business travelers because pen won't leak with a change in cabin pressure Uncapped pen displays ink supply Ink is acid-free, water-resistant and fade-resistant; refillable 0.5 mm point; Blue,Black ink