| 1 | He tightened the bolt up slowly. | |
| 2 | Active use can loosen bolts and make screws come loose. | |
| 3 | His hands find the top of a bolt. | |
| 4 | Make sure the wood screws aren't too long and penetrate the plastic liner. | |
| 5 | Michael removes a bolt from the hotel fire escape. |
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