Pneumatic Rock Drill
| Type | TJ-20 | TJ-26 | TS-55 |
| Piston Diameter (mm) | 68 | 70 | 66,6 |
| Piston Stroke (mm) | 49 | 70 | 65 |
| Blow/Min (bpm) | 2400 | 1850 | 1800 |
| Nett Weight (kg) | 18,5 | 26 | 27 |
| Overall Length (kg) | 610 | 680 | 568 |
| Air Consumption | 2,5 | 2,7 | 2,6 |
| Hose Size (mm) | 19 | 19 | 19 |
| Rotar Speed (rpm) | 200 | 200 | 200 |