In the video, a person is seen holding a pen and a needle. The pen is made of plastic and has a clear body with a metal tip. The needle is thin and sharp, and it is being held by the person's fingers. The person then proceeds to insert the needle into the pen's tip, carefully aligning it with the metal tip. Once the needle is in place, the person pushes it down into the pen's tip, creating a seal. The person then removes the needle, leaving the pen with a new, sharp tip. The video is shot in close-up, allowing viewers to see the details of the pen and the needle. The person's movements are precise and deliberate, indicating a level of expertise in this task.