6 Pack EnerGel RTX Roller Ball Retractable Gel Pen, Black Ink, Medium, 3 per Pack by PENTELThe best qualities of liquid and gel ink are blended into a super-smooth ink and delivered via an exclusive ink/tip technology for the smoothest write. Vivid, acid-free ink dries quickly without smearing or blotting and is great for left-handed writers. The sleek, stylish barrel makes this pen extremely appealing. Needle tip. Retractable. Special Ink Type: Gel; Pen Style: Retractable; Ink Color(s): Black; Pen Type: Roller Ball.