Experience smooth and consistent writing with the Uni-Ball Rollerball Pen UB-150. This pen features a cap-off design, a convenient clip, and utilizes liquid gel-based ink for a premium writing experience. It offers a fine nib size of 0.7mm with a line width ranging from 0.2mm to a maximum of 0.3mm. The pen is suitable for left-handed individuals. This pack includes 12 rollerball pens in a vibrant blue ink color. The pens are designed with a transparent barrel and silver accents, with the ink color being blue. The pen is also eco-friendly, with some versions made from 70% recycled plastic.