Black Gel Ink Rollerball Pens 0.7mm Ballpoint Writing Pen with Clip Smooth Writing for Students Teachers Workers

• Black gel ink pens for writing. Upgrade your writing experience with our premium 0.7mm black gel pens. Quick-drying, smear-proof, fade-resistant, non-toxic, and eco-friendly.
• Enjoy effortless writing with our Black Gel Pens. The stainless steel tip with tungsten carbide ball ensures easy ink flow and smooth writing, reducing hand fatigue caused by prolonged writing and improving handwriting.
• Our stylish rollerball pen barrel features a three-petal design that provides a stable and comfortable grip. The black frosted and antibacterial material pen body with IP Black stainless steel pen clip gives an elegant and professional look.
• The black ballpoint pens come with long-lasting large capacity refills, making them the perfect companion for writing, drawing, doodling, marking out, sketching, drafting, calligraphy, and more.
• The stationery set of black pens are widely used at home, schools, and offices, making them a great gift for your family and friends who are students, workers, doctors, bosses, artists, or teachers. Upgrade your writing experience today!

Regarding the breathing holes on the cap and bottom of the pen: The breathing hole can maintain consistent atmospheric pressure inside and outside the pen, making it easier to remove the pen cap. Breathing holes are also called life-saving holes. When using a pen, some children may put the pen cap into their mouth out of curiosity. In the event of an accidental swallowing accident, this breathing hole can ensure that the respiratory tract is not completely blocked before rescue. We will make every effort to ensure the quality of the pen refills. So please don't worry about the problem of refill leaking. About the label: This pen has three types of nibs, and you can choose your preferred thickness according to your needs. This is one of the information displayed on the label. The bar-code label indicates that this is a pen that has passed quality inspection. Due to the inconvenience of displaying bar-codes other than Amazon product labels, this is not specifically shown in the product images. About the Pen Body The pen has a matte surface, which provides a better grip and more comfortable touch.