Enjoy a steady flow of ink every time! Exclusive uni-flow ink system(TM) regulates a steady flow of ink as you write. Waterproof ink flows consistently to the point for smoothness and color intensity down to the last drop. Archival quality and acid free for documenting and record keeping. Features uni Super Ink specially formulated to help prevent check fraud. Ink is designed to become trapped in paper, helping prevent criminal check washing and other document alterations. Convenient pocket clip for portability. Uni-ball Pens part of a large selection of office supplies. uni-ball(R) Vision(TM) Rollerball Pens, 0.7mm, Fine Point, Assorted Barrel, Assorted Ink, Pack Of 5 is one of many Rollerball Pens available through Office Depot. Made by Uni-ball.