Optimal 550 vario
| Upper Rootball Diameter | 55 cm | 45 cm | |
| Rootball Depth | 42 cm | 36 cm | |
| Working Height | 113 cm | 113 cm | |
| Width Gate Closed | 118 cm | 118 cm | |
| Width Gate Open | 113 cm | 113 cm | |
| Clearance Open Gate | 72 cm | 68 cm | |
| Inner Frame Diameter | 46 cm | 46 cm | |
| Weight Empty | 325 kg | 320 kg | |
| Rootball Volume | 0.05 m³ | 0.03 m³ | |
| Blades Number | 3 | 3 |