| Modello | Peso operativo |
|---|---|
| WF600T-1 | 37000 kg - 81571 libbre |
| WF550T-3 | 35100 kg - 77382.2 libbre |
| WF550-3 | 35500 kg - 78264.1 libbre |
| WF450T-3 | 25400 kg - 55997.4 libbre |
| WF450T-1 | 23250 kg - 51257.5 libbre |
| WF450-3 | 26000 kg - 57320.2 libbre |
| WF22T-2 | 21500 kg - 47399.4 libbre |
| WF22A-2 | 22400 kg - 49383.5 libbre |