Paper Mate Paper Mate 550 Ballpoint Pen, Retractable, Blue, Medium, 4-Pack (1803508) The technology of Ink joy: a unique blend of ultra-low viscosity inks and optimized writing tips gives you crisp, clean lines and unparalleled smoothness. The art of Ink joy: a range of sleek and modern pen designs houses a rich palette of vivid ink colors to dazzle your writing imagination. Ink Joy 550 pens have an hourglass shape sculpted to fit the contours of your hand and a full-length rubberized grip that make them exceptionally comfortable to hold and easy to control. Translucent and opaque materials flow together for a stylish look. The metal clip and accents provide durability. Tip retracts for convenient, one-hand use. 1.0 mm point gives you a nice, solid, smooth line for general writing.