Overview Reviews Product Description Uni-Ball Eye Micro Rollerball Pens have a unique design with a handy see through window which allows you to monitor how much ink is left. Micro 0.5mm nib.Contain Uni Super Ink which is permanent, waterproof and fade proof once dry Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Uni-Ball Uni Eye Micro 0.5mm 4pk Asst. Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments