Pentel wow ballpoint retractable pen display box, medium, black/blue/red ink, 36/display box wow retractable ballpoint pens offer a three-sided triangular barrel with a soft latex-free rubber grip for writing comfort. Click top to advance tip. Click side button to retract. Ballpoint pens write medium lines. Each pen features a stylish transparent barrel and convenient pocket clip. Ideal for students, households and general office supplies.