Uni-Ball are a trusted brand of ballpoint pen bring you one of the most popular rollerball pens in the world. Uni-Ball UB157 range of writing instruments contains Uni-Super-Ink which is fade resistant water resistant and tamper proof. The unique Uni system that gives you confidence to have a uniform ink flow until the end of the ink. Medium (0.7mm). The package contains 5 x units. Especially even writing. Contains unique Fade Proof Super Ink For daily use in the home office or school.