uni-ball Roller Ball Pen Ball Pen Refill  (Pack of 24, Ink Color - Multicolor)

Water Resistant (Dyestuff Ink particle is easily soluble in water and will bleed on the paper, uni Super ink – pigmented ink will bond itself to the paper fibers Once it is settled, it is not soluble in water). Light Resistant (The size of uni Super ink particle is larger than Dyestuff Ink. Therefore its surface is less affected and the colour remains vivid) . Time Resistant (Dye Ink is easily Break down because of the sunlight and air. uni Super ink is difficult to breakdown)