FeaturesThe worlds favourite Uni-Ball pen for over 12 yearsControlled liquid ink flow systemEnsures a smooth writing performanceContains uni super ink that is water and fade resistantPack of 8The Uni-Ball UB-157 Eye Rollerball Medium (Pack of 8) features a medium 0.7mm nib for a 0.5mm line width, which is ideal for detailed work. The pen contains liquid Super Ink, which is fade resistant, water resistant and tamper proof. The unique system provides a continuous flow of ink down to the last drop for smooth, consistent writing. This pack contains 8 pens in assorted colours.