The gadder is widely used in coal, metallurgy, railway, traffic, water conservancy, infrastructure and defense engineering in the levels of all kinds of rocks, hole drilling operations.
| Model | YO18 | YO20 |
| Weight (kg) | 18 | 20 |
| Length (mm) | 550 | 561 |
| Piston stroke(mm) | 45 | 55 |
| Working pressure(MPa) | 0.4~0.5 | 0.4~0.63 |
| Gas consumption(L/s) | ≤33 | ≤33 |
| Borehole diameter(mm) | 8 | φ24~φ42 |
| Shank size (mm) | 22×108 | 22×108 |
