The ever popular Uni-Ball pen features a unique controlled ink flow system ensures smooth writing performance right down to the last drop. The waterproof ink resists fading & smudging & a visible ink window lets you know at a glance how much ink is left. Stainless steel tip provides quality writing & thelps prevent the nib from drying out. A pen you can rely on. This fine tipped pen has a line width of approximate 0.3mm. This pack contains 5 pens in blue black & red ink.