BIC Products - BIC - Refill for Velocity Gel Roller Ball, Medium, Black Ink, 2/Pack - Sold As 1 Pack - Smooth-flowing, vivid gel ink. - Writing made easy. - Long-lasting. Pen_Refill_Type - Roller Ball Special_Ink_Type - Gel Refill_For_Series - BIC Velocity, Triumph and Atlantis Retractable Gel Roller Pens Point_Type - Medium