| Formulations | F0 | F4.01 | F12.54 | F23.03 | F32.01 | F38.01 | F51.02 |
| External diameter of the tubes | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
| Internal diameter of the tubes | 82 | 82 | 82 | 82 | 82 | 82 | 82 |
| color | White grey | Light grey | grey | Dark grey | black | black | Dark black |
| Surface finish | Very smooth | Very smooth | smooth | smooth | Medium smooth | Not smooth | Not smooth |
| Form | Round | Round | Round | Round | Round | Round | Round |