The video features a person holding a folding knife in their hand. The knife has a black handle and a silver blade. The person uses a screwdriver to adjust the tension of the knife's blade. They then demonstrate the knife's opening and closing mechanism, showcasing its smooth and precise movement. The person's hand movements are steady and controlled, indicating familiarity with the knife's operation. The background is a dark surface, possibly a table or workbench, which provides contrast to the knife and the person's hand, making the actions clearly visible.