1. 20 Packs Large Packs -- Our pack including 20 black retractable gel pens. The large capacity refill ensures that each pen can write at least 400 yards, and 20 packs of gel pens can write for a long time, it's worth a lot. And whether it is for work, study and life, it is a great helper for writing. .2.Excellent workmanship and smooth writing -- Our gel rollerball pen nib is made by Japanese craftsmanship, 0.5mm high quality tungsten pen nib, giving you smooth and continuous writing feeling, no ink leakage, continuous ink without skipping, reliable and durable, it performs great on most papers. .3. High Quality and High Standard -- Our gel pens are made of new PP plastic, high quality pen nibs, comfortable rubber grips and scientifically formulated premium inks, durable and strong, safe and non-toxic, compliant to CE and related testing standards. Whether used by adults or children, it is absolutely safe and healthy. .4. Variety of Uses -- They can be used for writing, office work, note taking, jotting down, diaries, etc. They are the perfect choice for your writing at school, university, office or home. And this ballpoint pen can be replaced with refills, so the pen has a longer service life. .5. Risk-free purchase and best after-sales service -- We offer a 90-day MONEY BACK GUARANTEE, no questions askedIf a pen does not flow properly in the case of normal writing, don't worry, we can help you with our best efforts as soon as possible. If you have any questions, has 24-hour after-sales service. 24 hours, we will give you a satisfactory answer. .