The video shows a close-up of a 3D printer's extruder. A person's hand, wearing a blue glove, is seen using a screwdriver to tighten the screws on the orange base of the extruder. The screws are silver and there are four of them. The person tightens each screw individually, using the screwdriver to turn them clockwise. The background is a wooden surface with a black mat that has a yellow handprint on it.