Gullor Ballpoint Pen Refills, Pack of 10, Blue Ink

One Set include 10 packs of the same color. The refill is also applicable to common rollerball pen of other brand.But you must carefully check the specification of the refill to see if they can match your original pen properly. You will choose 2 colors, blue or black. Refill Color Description: Black refill = black appearance Blue refill = blue appearance Length: 4.57 inches Width: 0.11 inches Circle: 0.5mm Applies to: Big Diamond or Crystal Pen and Stylus Pens.