Pentel Arts Sunburst Metallic Gel Pen, Medium Line, Permanent, 5 Pack, Assorted Ink (K908MBP5) Sparkling metallic ink creates dazzling lines on many different colors of paper Permanent, waterproof, fadeproof and acid-free for a lasting impression Sturdy, well-balanced barrel makes this a fun pen to use Escape writing fatigue with our Latex-free Comfort Zone grip 0.8mm tip writes medium lines