- The internal fall-arrest device prevents the air tool from dropping even in the unlikely event that the spring breaks.
- With a large hose inner diameter of Φ8.5mm, a sufficient air flow rate is ensured for air tools to operate reliably.
| Model | capacity (kg) | Stroke (m) | Hose inner diameter (Φmm) | Mass (kg) |
| THB-15 | 0.5～1.5 | 1.3 | 8.5 | 1.9 |
| THB-25 | 1.5～2.5 | 1.3 | 8.5 | 2.0 |
| THB-35 | 2.5～3.5 | 1.3 | 8.5 | 2.1 |
| THB-50 | 3.5～5.0 | 1.3 | 8.5 | 2.1 |
| THB-65 | 5.0～6.0 | 1.3 | 8.5 | 2.2 |