| Model | EXTREME 100 III | EXTREME 120 III | EXTREME 140 III | EXTREME 160 III |
| Input Power (V) | 110 | 230 | 230 | 230 |
| Rated Input Current (A) | 34 | 22 | 25 | 30 |
| Rated Input Capacity (kVA) | 3.74 | 5.06 | 5.75 | 6.9 |
| Rated Open Circuit Voltage(V) | 65 | 68 | 68 | 68 |
| Welding Current Adjustment Range(A) | 20-100 | 15-120 | 20-140 | 20-160 |
| Rated Output(A) (20℃) / (40℃) | 20%20%@100 | 15%20%@100 | 20%20%@140 | 20%20%@160 |
| Weight (kg) | 2.5 | 3 | 3 | 3 |
| Electrode Diameter (mm) | 1.6-2.6 | 1.6-2.6 | 1.6-3.2 | 1.6-4.0 |
| LxWxH (mm) | 280x 102 x 176 | 315 x 102 x 176 | 315 x 102 x 176 | 315 x 102 x 176 |