Features: Quality: Superior ink make the pens writing smoothly and using durable Great pens for coloring, kid doodling, scrapbooking, sketching, drawing, doodling, writing and getting creative in a fun and skilled way. Easy for Use: Each Gel Pen is fitted with comfortable grip, you can recognize the color easily and use them without fatigue. The transparent barrel makes it easy to see how much ink is remaining, so you can refill the pen in time.It is really great for everyday use. Large Capacity Refill: The refill of our writing pen is made of a good quality nib, which makes writing smoothly on paper without paper resistance. You can use it to sketch, draw, color,write, etc. If you often need to use a black pen, our super-capacity black ink pen is perfect for you. The ink dries quickly on paper to prevent gelatinization and provide super smooth handwriting. Super Quick-drying Rollerball Pens: With precision tip and smooth writing ink, the rollerball ink dries quickly after a few seconds. The good quality black gel ink pens, no blots After-sales Service:If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Specification: Pen Length:14.3cm Line Width: 0.5mm Color:Black,Red,Blue,Blue Black 12pcsGel Ink Pen