0.5mm retractable gel pen, comfortable grip, smooth writing! This 0.5mm ink gel pen is made of ABS plastic, size 5.75"x0.4", retractable design, gently press top, the pen tip will automatically retract and extend, convenient clip enables pen to be firmly clamped onto books, 0.5 mm tip ensures smooth writing w/ gel-style Black Ink that flows flawlessly and dries quickly. If the ink runs out, you can remove the old cartridge&replace it w/ a new one. This pen is a very effective promotional tool, suitable for any situation where a pen is needed, such as in schools, at home, or in the workplace. Multiple colors are available, silkscreen custom logo, we also offer other custom, please contact us for more information.