Features: Quick drying: Quick dry gel ink black pens adopt 0.5 mm black ink, the black ink is easy to dry, not easy to bleed or leak, ideal for your daily writing, marking, signing and more, providing you with an enjoyable use experience. Vibrant colors: The retractable gel black pens set has 10 bright and vivid colors. Different colors will fully meet your demands of daily writing, giving you more fun in daily life and making you feel relaxed, creating eye catching and vibrant impression. Retractable and clip design: Smooth writing colorful pen are designed in retractable style. Just press them lightly to use, convenient to write and store. With clip design at the top, they can be clipped in notebooks, journals, shirt pocket, convenient for you to carry them. Specifications: Material: plastic Ink color: black Color: 10 colors Size: approx. 5.7 inches/ 14.5 cm in length Package includes: 300 x Retractable quick dry ink pens Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen display.