Description These are Pen Refill replacements, which are made of plastic material, making them not easy to break and leak. Suitable for sending it as a gift to office stuff and teens, encourage them to study harder. A perfect gift choice for your family, friends or colleagues, they will like them a lot. Features -Color:Assorted Color -Material:Plastic -Size:12.90X0.30X0.30cm/5.07X0.12X0.12in -Using good and anti-wear plastic materials, they are strong and durable, support long-term use. -Portable and light in weight, and these Pen Refills are easy and convenient to carry and take. -The detailed workmanship of our pen refills will bring you a good using experience. -The pen tip will not scratch notebooks and greeting cards, and is safe and durable. -These pen refills are easy and convenient to be installed and detached from gel pen. Using good and anti-wear plastic materials, they are strong and durable, support long-term use. Portable and light in weight, and these Pen Refills are easy and convenient to carry and take. The detailed workmanship of our pen refills will bring you a good using experience. The pen tip will not scratch notebooks and greeting cards, and is safe and durable. These pen refills are easy and convenient to be installed and detached from gel pen.