Stock up on the PILOT FriXion Synergy Clicker Erasable, Refillable & Retractable Gel Ink Pens, 0.5mm Extra Fine Point, Black Ink, 5-Pack! Click here to get it for only $5.89. Pilot FriXion Synergy Clicker: Featuring an innovative and patented Synergy Tip design for detail, durability and incredibly smooth writing. Don’t forget to use the clip to ‘click’ the pen Unlimited Do-Overs: FriXion’s unique thermo-sensitive ink