Difficulty ★★☆☆☆
Product composition size: 1 screw, 1 bolt, screw diameter of about 1.5cm, thickness of about 0.6cm, 1 pipe, gimmick pipe length of about 2cm, diameter of about 0.8cm
Material: silver barrel and lid
Total weight: 0.05kg
Product directing: The audience directly tightens the screw into the bolt and then puts it into the bucket. When you give a signal and shake it, the screw that was tightened will loosen.