BIC DUO Ball Pen / Highlighter, Refillable, Black, 6 Pen/Highlighters Ball Pen and Highlighter in one A simple twist changes the ball pen to a highlighter  all from the same point Features bright fluorescent yellow refillable highlighter ink Medium point 6 Packages of 1 Pen/Highlighter Simple twist changes the ball pen to a highlighter Refillable highlighter Medium point Refillable Ball Pen & Highlighter in one