Pilot FriXion Ball Erasable Rollerball Pen Broad Black (12 Pack) 4902505551093The FriXion rollerball pen has a unique gel ink that responds to the heat generated by the eraser. Simply write over your mistake immediately with the same pen. The pen is also refillable for long lasting use. The broad 1. 0mm tip writes a 0. 5mm line width. This pack contains 12 pens with black ink. FriXion rollerball with erasable ink Ergonomic rubber grip for comfortable use Ink flows smoothly without surfeit or drying Erasure is as easy as with