Sold as 1 Dozen. Retractable rollerball pens are ready to write with just a click. 12 pens per pack. Unique liquid ink system provides even flow and smooth marking. Purple ink for bright and clear writing. Comfort grip for superior control. Extra fine 0.5mm tip ensures crisp lines with every use. Features a pocket clip for convenient carrying. Purple barrel. Refillable ink allows pens to be reused instead of being replaced to save money.