| Specifications | GMD 350 | GMD 400 | GMD 500 | GMD 600 GII | GMD 700 GII | GMD 800 GII |
| Working width (m) | 3.51 | 1.6 | 2 | 2.4 | 2.8 | 3.11 |
| Cutterbars | OPTIDISC® | - | - | - | - | - |
| Security | Mechanical lock | - | - | - | - | - |
| Number of discs with protecting skids | 8 | 4 | 5 | 6 | 7 | 8 |
| Swath width (m) | 2.8 | 1.1 | 1.3 | 1.7 | 2 | 2.4 |
| PTO speed (rpm) | 540 | 540 | 540 | 540 | 540 | 540 |
| Setting to transport position | 90° upward pivot | - | - | - | - | - |
| Transport width (m) | 1.62 | Tractor width + 230 mm | Tractor width + 230 mm | Tractor width + 170 mm | Tractor width + 170 mm | Tractor width + 210 mm |
| Safety break-back | - | As standard | As standard | As standard | As standard | As standard |
| Weight (kg) | 822 | 380 | 420 | 535 | 567 | 646 |
| Minimum power requirement for PTO (kW) | - | 21 | 21 | 31 | 37 | 41 |
| Minimum power requirement for PTO (hp) | - | 28 | 35 | 35 | 50 | 58 |
| Tractor hydraulic equipment | 1 SA | 1 SA | 1 SA | 1 SA | 1 SA | 1 SA |