| 8483.40.30 | | Gear boxes and other speed changers: | | | | |
| 8483.40.30 | | Fixed ratio speed changers, multiple and variable ratio speed changers each ratio of which is selected by manual manipulation: | | | | |
| 8483.40.30 | | Imported for use with machines for making cellulosic pulp, paper or paperboard | | Free | | 27.5% |
| 8483.40.30 | 40 | Fixed ratio speed changers | No. | | | |
| 8483.40.30 | 80 | Other | No. | | | |
