Premium gel roller. Broad tip = 1.0mm = 0.38mm stroke width World's number 1 gel pen. Retractable roller ball pen with gel ink is a totally new dimension in writing. G2 is engineered to the highest specifications to provide the best writing performance for the 21st century. Features: - Premium gel roller - Retractable - Smooth writing - Smooth gel ink: Acid free, Archival safe & Smear proof - Comfortable rubber grip - Refillable - Colour: Black What's in the box 1 Black Pen