Uni flow ink system of these pens makes your writing effortlessly creative and flawless. It comes with an exclusive ink system that delivers smooth-flowing ink and ensures consistency. The quality of our products is what makes Readstore the best online stationery shop in Pakistan. These pens are bend-resistant and have stainless steel tips and a tungsten carbide rollerball that makes the writing experience pleasurable. Uni-Ball Fine Deluxe Ball Pen Blue Colour- 1 Pc. The ink is water and fade-resistant which helps you compose the longevity of documents you wish to store.