FeaturesQuick-drying, smooth flowing EnerGel ink is perfect for right or left-handed writersReduces smudging on hands and paperLatex-free grip with grooved finger print pattern support0.7mm tip gives approx. a 0.35mm (medium) line widthRefillableThe Pentel EnerGel XM Rollerball Pen (Box of 12) is the latest EnerGel pen, boasting a stylish metal-look barrel. There\'s a rubber grip area with a grooved fingerprint pattern and a metal pocket clip. Pentel claims that their hybrid liquid gel ink is smoother flowing and quicker drying than ordinary gel ink.  0.7mm tip writes a 0.35mm line.  Pack of 12 pens with black ink.