uni ball UB 150 Liquid Ink Rollerball Pen Fine 0.5mm Tip Black, Blue, Green, Red Pack of 4

UNI-BALL UB-150 EYE MICRO PREMIUM MICRO FINE ROLLERBALLS Mixed Pack of 4 [1 x Black, 1 x Blue, 1 x Red, 1 x Green] High Quality & Reliable Rollerball Featuring Water-Proof Pigment Ink & Uni-Flow System to Ensure a Continuous and Consistent Write to the Last Drop ULTRA MICRO Fine Tip, 0.5mm Rollerball Writes a 0.3mm Line A Barrel Window allows the User to see how much Ink is left