Jetstream RT Roller Ball Retractable Pen 1.0mm Green/Black Experience color like never before. Differentiate yourself with the deep rich write of BLX black-infused colors. Writes smoothly while providing rich vivid lines. Features uni-Super Inkâ ¢ that helps prevent check and document fraud. Textured grip provides superior writing comfort and convenience. Point Size: 1mm; Point Type: Bold; Ink Color(s): Green/Black; Pen Type: Roller Ball.