With its revolutionary low viscosity liquid gel ink, the EnerGel formula is quicker drying and smoother flower than ordinary gel ink. Because the ink dries super quickly, it's appreciated by right and left-handed writers alike, as it produces smudge-free results on paper or hands. Special blue & white barrelled version to support Prostate Cancer UK, £0.25 donated for every pen sold. Retractable rollerball with ultra quick drying, smooth flowing EnerGel ink. Metal pocket clip. Push button retractable nib. Contrasting white grooved finger grip. 0.7mm tip gives approx. a 0.35mm line width. Refillable so no need to throw it away once it is empty, simply buy a new refill. Single pack containing one EnerGel Xm pen in black ink.