[Easily to color and durable]The gel pen refills are equipped with specially upgraded ink, which is easy to color, not easy to leak and clog, and can last long on your paper. The large-capacity pen allows you to use it for a long time.

[Specification]This box of Black gel pen refills contains 20 pieces, each 0.38mm and 110mm/4.3Inch long. The sufficient quantity can meet your daily office needs, allowing you to change refills while working or studying easily.

[Application]This gel pen refill is widely used in the office, study, and daily life for writing, singing, painting, graffiti, calligraphy practice, etc.

[Enhanced Version] The pen refill features a robust thick plastic casing that ensures effective breakage prevention and long-lasting durability.

[Smooth writing experience]The pen refill is smooth and fluent, with no interruption of ink during writing. The ink flows out evenly and smoothly, giving you a very wonderful and unprecedented writing experience. Quick-drying gel avoids smudges and prevents getting your hand dirty.