The uni-ball UMN-207 retractable gel ink rollerball will help you create perfectly smooth handwriting. A great-quality all rounder, the pen features unis water resistant, fade resistant and tamper-proof Super Ink, making the pen ideal for all your important written work. Plus the smart rollerball pen has a rubber grip that ensures comfortable use for extended writing periods. With a sturdy 0. 7mm nib, the pen is available in black, blue and red.